Boitatá, the Fire Serpent is a legend from São Vicente (São Paulo), BR — a folk story passed down over generations. This file collects its origins, its meaning and how it has been retold.
Where does the legend of Boitatá, the Fire Serpent come from?
Location
São Vicente (São Paulo), BR
Kind of legend
Creature legend
Coordinates
-23.966, -46.386
Testimonies
0
Last updated
LOCATION
What is the legend of Boitatá, the Fire Serpent?
The Boitatá is the fire that runs across the fields at night, and it is one of the oldest things anybody wrote down about Brazil. At the end of May 1560, in a Latin letter sent from São Vicente, the Jesuit José de Anchieta reported that along the shores, near the sea and the rivers, there were beings the Brasis called Baêtatâ — res ignis, a thing of fire. By night, he wrote, nothing appears but a sparkling fire darting here and there; it attacks the Indians and kills them, as the Corupira does, "and what this may be is not yet established". There is no snake in that paragraph, and nothing is being protected. The serpent arrives three centuries later, through books: a novelist gave it burning eyes in 1874, and in 1876 an army general turned it into cobra de fogo, the spirit that guards the open grassland against those who set fire to it. The version taught in Brazilian schools today — the endless night, the eyes of the dead animals, the light trapped inside the body — was written by a named author in Rio Grande do Sul in 1913, and it ends with the Boitatá dead.
Digital illustration uploaded to Wikimedia Commons by its own author in 2019. It is neither a historical document nor a piece of folk art.
Image:
The ponta cabeça · CC BY-SA 4.0
What is the history of Boitatá, the Fire Serpent?
Almost everything about the Boitatá can be dated, which is rare in folklore, and the dates do not run the way the legend says they do.
The oldest record is a letter. At the end of May 1560 the Jesuit José de Anchieta wrote from São Vicente — "the last settlement of the Portuguese in Brazilian India facing south", as he signs off — a long naturalist's report to his superior: ants, manatees, anteaters, stones, a storm at sea. He wrote it in Latin and it stayed in manuscript for two and a half centuries. At the very end comes a short section on "nocturnal apparitions, or rather demons, with which the Indians are accustomed to terrify themselves", and in it three beings in a row: the Corupira of the woods, the Igpupiara of the rivers, and then this, in the 1812 Lisbon printing, with the long s normalised:
"Sunt et alii in litoribus maxime, secus mare et flumina versantes, qui Baêtatâ, hoc est res ignis appellantur, quod idem est, ac si dicas, aliquid quod totum est ignis. Apparet noctu nihil aliud, quam ignis scintillans huc illuc discurrens, celerrime invadit Indos, et necat, sicut et Corupira: quid hoc sit, adhuc non constat."
There are others as well, chiefly on the shores, keeping near the sea and the rivers, who are called Baêtatâ, that is, a thing of fire, which is the same as if you said something that is entirely fire. By night nothing appears but a sparkling fire running this way and that; it attacks the Indians very swiftly and kills them, just as the Corupira does: what this may be is not yet established.
Read the sentence for what is not in it. There is no snake. There is no field, no forest and nothing guarded; the thing kills, and that is all it does. And the man writing, who translates every other Tupi name he uses, ends by saying he does not know what this one is.
The name carries the argument, and it can be checked without leaving the letter. Anchieta glosses it himself — res ignis, a thing of fire — and he is scrupulous with these compounds. Seventeen printed pages earlier he runs through the snakes of the province and translates every name: Bóicininga, "id est coluber tinniens", the rattling snake; Bóiquatiára, "id est colubri picti"; Bóipéba, "hoc est colubri plani"; Bóiroiçanga, "id est colubri frigidi"; and further on Bóiquíba, "hoc est colubri pediculos", snake-lice. Five times boi, five times coluber. His annotator spelled the rule out in 1812: "Boi, seu Boia inter Brasiliae Indigenas nomen est appellativum Serpentium" — among the natives of Brazil, boi or boia is the general name for snakes. For the fire on the shore Anchieta does not use it. In 1560 the word is baê.
The Latin went to press in Lisbon in 1812, in the first volume of the Academia Real das Sciencias' Collecção de noticias para a historia e geografia das nações ultramarinas, annotated by Diogo de Toledo Lara Ordonez — the same edition our Curupira file works from. Portuguese readers waited longer still. The translation everyone quotes, made by Teixeira de Melo with Martinho Corrêa de Sá, ran first in the first volume of the Anais da Biblioteca Nacional, pages 275-305, and then, corrected, in the Diário Oficial of Rio de Janeiro on 22, 24 and 26 December 1887 and 2 and 7 January 1888. That chain comes from the editorial note 1 of the 1933 Rio edition, which does not date the Anais printing; the dated appearance is the Diário Oficial one.
By then the snake had already arrived, and it arrived through literature. In 1872 the word is in a gaucho ballad inside Apolinário Porto-Alegre's novel O Vaqueano, used as a figure for a man worn to a shadow. In 1874 José de Alencar, in Ubirajara, has an elder name a guest Boitatá "because he has the eyes of the great fire serpent that flies like the lightning of Tupã". Two years later, in 1876, General Couto de Magalhães printed in O Selvagem, page 138, the sentence the whole country has repeated since: "O Mboitatá é o gênio que protege os campos contra aquelles que os incendeiam; como a palavra o diz mboitatá é: cobra de fogo; as tradições figuram-n'a como uma pequena serpente de fogo que de ordinário reside n'agua. Às vezes transforma-se em um grosso madeiro em brasa, denominado méuan, que faz morrer por combustão aquelle que incendeia inutilmente os campos."
Notice where that stops. The campos — open grassland — not the forest. Seven lines further down the same page Couto hands the forest to somebody else: "O Curupira é o deus que protege as florestas", who punishes whoever fells or needlessly spoils trees. The two paragraphs are on one page of one book. In most modern retellings, ours included, there is nothing between them at all, and the Boitatá has quietly inherited the Curupira's job. Notice the size, too: Couto's fire serpent is pequena, small, and lives in the water. The giant of the picture books is Alencar's.
The version most Brazilians can recite is younger still and has an author. In 1913, in Pelotas, João Simões Lopes Neto opened his Lendas do Sul with "A M'boi-tátá". It is not a flood story: it begins with a night so long it seemed daylight would never come, and the downpour that follows only floods the burrow of the boiguaçu, the great snake, and drives it out. It eats the eyes of the carrion and nothing else. Having no hair, no scales, no feathers, no shell and no thick hide, it turns transparent, lit from inside by the last of the daylight the dead animals had kept in their eyes, and the men who see it fail to recognise it and rename it: boitatá, cobra de fogo. Then comes the ending nobody repeats. The boitatá starves — light is not food — and it dies among the carcasses, its body rots, the trapped light is loosed across the fields, and the sun comes back. What runs over the summer grassland afterwards, cold and yellow-blue, is not the snake. It is what the snake was carrying.
Timeline: the documented record of Boitatá, the Fire Serpent
end of May 1560The Jesuit José de Anchieta signs at São Vicente a Latin letter describing the natural things of the province. In its last section, on nocturnal apparitions, he records beings called Baêtatâ, 'res ignis', a thing of fire, seen on the shores near the sea and the rivers: nothing appears at night but a sparkling fire darting about, which attacks and kills the Indians as the Corupira does. He adds that what it may be is not yet established. It is the oldest record of the name, and it contains no snake.
1812The Academia Real das Sciencias prints the letter for the first time, in Lisbon, in the first volume of the Collecção de noticias para a historia e geografia das nações ultramarinas, annotated by Diogo de Toledo Lara Ordonez. His note 86 disposes of the Baêtatâ as an atmospheric phenomenon — 'these fiery meteors, whose nature the physicists explain, today terrify only the illiterate' — and a second note argues that Anchieta himself had not been entirely persuaded they were demons. The scepticism about the Boitatá is two centuries old and it is signed.
1872Apolinário Porto-Alegre serialises O Vaqueano in the Revista do Partenon Literário of Porto Alegre. In chapter XXIII a gaucho ballad uses the word as a figure of speech — a man so wasted that his sweetheart would swear he had turned boitatá. The name is already common currency in Rio Grande do Sul, forty-one years before the story everyone now tells was written there.
1874José de Alencar publishes the novel Ubirajara. In chapter IV an elder proposes a name for a guest: 'Chama ao hóspede Boitatá, porque ele tem os olhos da grande serpente de fogo, que voa como o raio de Tupã.' The great fire serpent, and its eyes, are in a work of romantic fiction two years before they appear in a book of folklore.
1876General Couto de Magalhães prints in O Selvagem, page 138, the sentence the country has repeated ever since: the Mboitatá is the spirit that protects the campos against those who set fire to them; the word means cobra de fogo; tradition pictures it as a small fire snake that usually lives in the water and sometimes turns into a great burning log, méuan, which kills by combustion whoever needlessly burns the fields. Seven lines below, on the same page, the forests are given to somebody else: 'O Curupira é o deus que protege as florestas.'
22 December 1887 – 7 January 1888Anchieta's letter is printed in Portuguese, in the version by Teixeira de Melo with Martinho Corrêa de Sá, across five issues of the Diário Oficial of Rio de Janeiro. It is the oldest dated appearance of 'cousa de fogo' in Portuguese we have been able to fix; an earlier printing in the Anais da Biblioteca Nacional is recorded but not dated by our source. From here on the learned gloss, thing of fire, and the popular one, cobra de fogo, run side by side.
1913João Simões Lopes Neto opens his Lendas do Sul, published at Pelotas, with 'A M'boi-tátá': the night that would not end, the flood that drives the boiguaçu out of its burrow, the eyes of the carrion, the body turned transparent by the daylight stored in them, and the men who fail to recognise the snake and rename it. It is the oldest printed version of the plot our own file told, and it ends with the boitatá starving to death and rotting, leaving its light loose over the fields.
Is there a rational explanation for Boitatá, the Fire Serpent?
The sceptic here is not modern, and he is not anonymous: he is the man who first got the letter into print.
In the 1812 Lisbon edition, Diogo de Toledo Lara Ordonez hung note 86 on the Baêtatâ paragraph and wrote: "Haec ignea Meteora, quorum naturam Physici explicant, hodie tantummodo illiteratos, ac superstitione imbutos perterrent" — these fiery meteors, whose nature the physicists explain, today terrify only the illiterate and those steeped in superstition. He then adds the mechanism, which is the one still used today: "Indis terrore atque metu affectis, non propriis viribus, non nunquam Baêtatá interitum afferret" — the Indians being struck with terror and fear, the Baêtatá has more than once brought about their death not by its own strength. And a second note on the same page, also numbered 86, goes further and defends Anchieta from his own readers: "Ex his tamen verbis, credo, facile concluditur Anchietam haec Meteora esse daemones non omnino sibi persuasisse" — from these words, I believe, it is easily concluded that Anchieta had not entirely persuaded himself that these meteors were demons. The editor even set the section heading in the past tense: at the time these things were written, it was believed that the demons inflicted death and wounds.
The best physical description of the thing, though, is inside the legend, and it was written by a man who was not arguing. Lopes Neto's boitatá gives "a yellow-blue fire that does not burn the dry grass and does not warm the water of the springs"; it is gone in winter, "curled up asleep", and comes out in summer after the muggy heat; it haunts hardest where the most carrion lay; and the way to survive it is to stand still with your eyes shut and stop breathing, or to throw your lasso and gallop off dragging it. A cold light, seasonal, over rotting matter in wet ground, that goes out when something disturbs the air. That is a marsh light described from close up, by someone who took it seriously.
What the chemistry of such lights actually is remains argued over, and this file will not pretend otherwise or hand the explanation to unnamed scientists. Lara Ordonez's confidence in 1812 that "the physicists explain their nature" was ahead of the evidence, and still is.
The datable question is a different one, and it can be answered. Searched on 16 August 2026, the digitised Portuguese-language corpus of pt.wikisource returns the string "boitatá" on exactly three pages: O Vaqueano (1872), Ubirajara (1874) and Lopes Neto's tale; "mboitatá" on two, both Lopes Neto. Only one of those five carries the plot we told — the flood, the eyes, the light — and it is the one signed and dated 1913. The controls in the same search on the same day: "curupira" returns two pages, and "batatão" returns one, which turns out to be a Potiguar chief listed by Frei Vicente do Salvador among the men who marched to the Jaguaribe in 1603 — a false positive, which is what a full-text search that is working looks like. It does not prove nobody told the story before 1913. It does mean that the oldest printed version anyone has put in front of us is a literary composition by a named author, and that the sentence about the Boitatá guarding the fields against arsonists is older than that, printed in 1876, and never said forest.
Can you visit Boitatá, the Fire Serpent?
There is nothing to visit. The Boitatá is a light on wet ground at night, and it has no cave, no ruin and no shrine; our map pin is a convention, not a place where the story happens.
The documents, on the other hand, are all free, and most of the work of this file was done with a browser. The Latin original is in the first volume of the Collecção de noticias para a historia e geografia das nações ultramarinas (Lisbon, 1812), which the Biblioteca Digital da Câmara dos Deputados in Brasília serves as a single PDF of about 105 MB; the Baêtatâ paragraph is at the end of §XLVI, printed page 162, and Lara Ordonez's notes are on printed page 178, where two consecutive and contradictory notes are both numbered 86. Warning from experience: the automatic text layer of that scan renders the long s as f, so a search for "sunt" finds nothing while "funt" finds everything. Read the page images, or search with the eighteenth-century spelling.
A faithful Portuguese translation, with useful notes, is Caderno nº 7 of the Série Documentos Históricos of the Conselho Nacional da Reserva da Biosfera da Mata Atlântica, "Carta de São Vicente 1560", published in the spring of 1997 and downloadable free; it reprints the 1933 Civilização Brasileira text edited by Afrânio Peixoto, and its note 78 is the one on the Baetatá. Couto de Magalhães's O Selvagem (Rio de Janeiro, 1876) is a free PDF of about 123 MB at the Biblioteca Brasiliana Guita e José Mindlin of the University of São Paulo; page 138 has the Mboitatá and the Curupira, one above the other. O Vaqueano and Ubirajara are transcribed on Portuguese Wikisource, and Lopes Neto's Lendas do Sul circulates freely in a digitisation of the Globo edition.
If you want a building, the closest honest one is the Museu Anchieta at the Pateo do Collegio, Praça Pátio do Colégio 2, in the historic centre of São Paulo — the Jesuit house of the man who wrote the word down. It opens Tuesday to Saturday, 09:00 to 16:45; admission is R$26, R$13 for students and teachers, R$6 for state-school pupils, pensioners and the elderly, and free for children under seven and for disabled visitors. Nothing in it is about the Boitatá, and São Vicente, where the letter was actually signed, is a separate town down on the coast.
The thing itself, if it is still there, is where Lopes Neto put it: flat wet pasture, after dark, in summer, over ground where animals have died. Do not go looking for it alone at night in unfamiliar marshland. The historical risk of the Boitatá has always been the ditch, not the snake.
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