Bolyeria multocarinata Boie, 1827

Round Island (burrowing) boa



Taxonomy & Nomenclature

Synonym/s: Eryx Multocarinata Boie, 1827; Tortrix Pseudo-Eryx Schlegel ,1837; Bolyeria Pseudo-Eryx Gray, 1842; Platygaster multicarinatus Duméril & Bibron, 1844; Bolyeria multicarinata Gray, 1849


Conservation Status

Last record: 1975

IUCN RedList status: Extinct


This species originally had a much larger distribution throughout Mauritius; Round Island being its last refuge, from which it has now probably disappeared as well.

A joint expedition was conducted from 24 April to 4 May, 2001 on Round Island to try to rediscover the species, which was only recorded four times during the 20th century. For specific details of areas searched and methods employed to try and trap an remaining specimens, see (Korsos & Trocsanyi, 2006).



Round Island, Mauritius


Biology & Ecology

The first evidence that the monotypic genus Bolyeria was oviparous was given in (Hallermann & Glaw, 2006).



Holotype: MHNP 7185

Other specimens:

ZM B[erlin] 8984 (collected in 1874-5)
ZM H[amburg] R06726 [ex 1265 and 10143]
Natural History Museum, London (3 specimens)
Mauritius Institute (1 specimen)

7 specimens are preserved in museum collections according to (Korsos & Trocsanyi, 2006). However, if the specimen mentioned in (Vinson, 1975) is not the same as the one described by (Hallermann & Glaw, 2006), then 8 specimens exist provided that the specimen mentioned by (Vinson, 1975) still exists.



A photograph of a preserved specimen can be found here:



Original scientific description:

Boie, F. (1827). Bemerkungen über Merrem's Versuch eines Systems der Amphibien, 1. Lieferung: Ophidier. Isis van Oken, Jena, 20: 508-566.


Other references:

Bauer, A. M. and Günther, R. (2004). On a newly identified specimen of the extinct bolyeriid snake Bolyeria multocarinata (Boie, 1827). [i]Herpetozoa[/i] 17(3/4): 179-181.

Bullock, David J. (1977). Round Island - a tale of destruction. Oryx 14: 51-58.

Bullock, David J. (1986). The ecology and conservation of reptiles on Round Island and Gunner's Quoin, Mauritius. Biol. Conserv. 37: 135-156.

Day, David. (1981). The Doomsday Book of Animals: A Natural History of Vanished Species. New York, N.Y.: The Viking Press.

Guibé, J. (1958). Les serpentes de Madagascar. Mem. Inst. Sci. Madagascar, series A, 12: 189-260.

Hallermann, Dr. Jakob and Glaw, Dr. Frank. (2006). Evidence for oviparity in the extinct bolyeriid snake Bolyeria multocarinata. Herpetozoa 19(1/2): 82-85.

Hudon, Daniel (writer) and Behin, Elahe (illustrator). (2014, April 6th). Brief Eulogies for Lost Species. Paragraphiti. Retrieved from [accessed 21 April, 2018]

Korsós, Zoltan and Trócsányi, Balazs. (2002). Herpetofauna of Round Island, Mauritius. Biota. 3(1-2): 77-84.

Korsós, Zoltan and Trócsányi, Balazs. (2006). The enigmatic Round Island boa (Bolyeria multicarinata): survival in the wild remains unconfirmed. [i]African Herp News[/i] [b]40[/b]: 2-7.

Maas, P.H.J. (2010). Round Island Burrowing Boa - Bolyeria multocarinata. In: TSEW (2010). The Sixth Extinction Website. ( Downloaded on December 11, 2010 .

Madagascar Reptile & Amphibian Specialist Group. (1996). Bolyeria multocarinata. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. ( Downloaded on 09 November 2012.

Uetz, P. et al., The Reptile Database, , accessed December 11, 2010.

Vinson, J. M. (1975). Notes on the reptiles of Round Island. Bull. Mauritius Inst. 8(1): 49-67.


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