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Bolyeria multocarinata (BOIE, 1827)

IUCN Red List - Bolyeria multocarinata - Extinct, EX

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Higher TaxaBolyeriidae, Henophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Round Island Burrowing Boa
G: Mauritius-Boa 
SynonymEryx multocarinata BOIE 1827: 513
Tortrix Pseudo-eryx SCHLEGEL 1837: 19
Bolyeria Pseudo-eryx — GRAY 1842: 46
Platygaster multicarinatus — DUMÉRIL & BIBRON 1844: 497 (emendation)
Bolyeria multicarinata — GRAY 1849: 106
Platygaster multicarinatus — JAN 1861
Platygaster multicarinatus — JAN 1862: 247
Bolieria multicarinata — BOULENGER 1893: 122
Bolyeria multocarinata — STIMSON 1969: 4
Bolyeria multocarinata — MCDIARMID, CAMPBELL & TOURÉ 1999: 213
Bolyeria multocarinata — WALLACH et al. 2014: 108
Bolyeria multomaculata — BAUER 2017 (in error) 
DistributionRound Island (off the coast of Mauritius)

Type locality: "Port Jackson"  
TypesHolotype: MNHN-RA 7185 
DiagnosisDiagnosis (genus): Anterior maxillary and mandibular teeth a little longer than the posterior. Head very small, not distinct from neck; snout covered with shields; nostril pierced in a single nasal. Eye very small, with vertical pupil. Body cylindrical. Scales small, hexagonal, juxtaposed or very feebly imbricate, tri- or quinquecarinate. Tail moderate, feebly prehensile; suboaudals single. (Boulenger 1893: 122)

Description (species): Snout very prominent, rounded. Rostral broader than deep, just visible from above; a pair of internasals, a pair of large praefrontals, a large supraocular, two preeoculars, four or five postoculars; nine upper labials, first and second, or second only, in contact with the priefrontal, fourth entering the eye. Scales in 53 to 57 rows. Ventrals 192-200; anal entire; subcaudals 83-92. Pale brown or greyish olive above, with small darker spots, which may form an irregular network; a dark streak on each side of the head behind the eye; a series of blackish vertical bars on each side of the tail; yellowish beneath, spotted or marbled with blackish. Total length 1000 millim.; tail 200. (Boulenger 1893: 123) 
CommentConservation: May be extinct now (fide Glaw, pers. comm.)

Type species: Tortrix pseudoeryx SCHLEGEL 1837 is the type species of the genus Bolyeria GRAY 1842. 
  • Bauer, A. M. 2017. Book Review: Los Anfibios y Reptiles Extinguidos. Herpetofauna Desaparecida desde el Año 1500. Herpetological Review 48 (2): 467-468 - get paper here
  • Bauer, A. M. and R. Günther 2004. On a newly identified specimen of the extinct bolyeriid snake Bolyeria multocarinata (Boie, 1827). Herpetozoa 17 (3/4):179-181 - get paper here
  • Boie, F. 1827. Bemerkungen über Merrem's Versuch eines Systems der Amphibien, 1. Lieferung: Ophidier. Isis von Oken 20: 508-566. - get paper here
  • Boulenger, G.A. 1893. Catalogue of the snakes in the British Museum (Nat. Hist.) I. London (Taylor & Francis), 448 pp. - get paper here
  • Bullock, David J. 1986. The Ecology and Conservation of Reptiles on Round Island and Gunner's Quoin, Mauritius. Biological Conservation 37: 135 156 - get paper here
  • Duméril, A. M. C. and G. Bibron. 1844. Erpetologie Générale ou Histoire Naturelle Complete des Reptiles. Vol.6. Libr. Encyclopédique Roret, Paris, 609 pp. - get paper here
  • Goin,C.J., Goin,O.B. & Zug,G.R. 1978. Introduction to Herpetology, 3rd ed. W.H. Freeman & Co., San Francisco
  • Gray, J. E. 1849. Catalogue of the specimens of snakes in the collection of the British Museum. Edward Newman, London, i-xv; 1-125. - get paper here
  • Guibé, J. & Roux-Estève, R. 1972. Les types de Schlegel (Ophidiens) présents dans les collections du Muséum National d'Histoire Naturelle de Paris. Zoologische Mededelingen 47: 129-134 - get paper here
  • HALLERMANN, J. & GLAW, F. 2006. Evidence for oviparity in the extinct bolyeriid snake Bolyeria multocarinata (BOIE, 1827) [Short Note]. Herpetozoa 19 (1/2): 82-85 - get paper here
  • Jan, G. 1862. Ueber die Familien der Eryciden und Tortriciden. Archiv für Naturgeschichte 28 (1): 238-252 - get paper here
  • Jan, G. 1864. Iconographie générale des ophidiens. 3. Livraison. J.B. Bailière et Fils, Paris - get paper here
  • McDiarmid, R.W.; Campbell, J.A. & Touré,T.A. 1999. Snake species of the world. Vol. 1. [type catalogue] Herpetologists’ League, 511 pp.
  • Schlegel, H. 1837. Essai sur la physionomie des serpens. Partie Descriptive. La Haye (J. Kips, J. HZ. et W. P. van Stockum), 606 S. + xvi - get paper here
  • Seung Hoon, Cha 2012. Snake, the world most beautifull curve [in Korean]. Hownext, 304 pp. [ISBN 978-89-965656-7-3] - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
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