308 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



KEY TO THE GENERA OF HISPANIOLAN SNAKES 



o^ Under side of body covered with small scales like those on back 



(family Typhlopidae) Typhlops (p. 308) 



a?. Under side of body covered with transverse plates. 



fci. Plates on under side of tail undivided (family Boidae). 

 c^ Anterior teeth on both jaws very strongly enlarged; scale 



rows around body 33 or more Epicrates (p. 313) 



c^. Anterior teeth gradually decreasing in size; scale rows 27 



to 29 Tropidophis (p. 324) 



h^. Plates on under side of tail in pairs (family Colubridae). 

 c^ Body slender and elongate; scales narrow, lanceolate, in 17 



or 19 rows diminishing to 11 or 13 at base of tail Uromacer (p. 329) 



c^. Body not unusually slender; scales normallj' wide. 



f/^ Snout acuminate, slightly turned up in profile. HjrpsirhsTichus (p. 344) 

 (P. Snout normally rounded in profile. 



e'. One or two apical pits near tip of each dorsal scale. 

 /'. Posterior maxillary teeth enlarged but not grooved 



Alsophis (p. 347) 

 p. Posterior maxillary teeth enlarged and grooved. laltris (p. 373) 

 c2. No apical pits present. 



p. A loreal present; anal divided Leimadophis (p. 353) 



p. No loreal; anal single Darlingtonia (p. 372) 



Family TYPHLOPIDAE 



Genus TYPHLOPS Oppel 



1811. Typhlops Oppel, Die Ordnungen, Familien und Gattungen der Reptilien 

 . . ., p. 54 (type, T. lumhricalis). 



1844. Ophthalmidion Dum£ril and Bibron, Erp4tologie g€n6rale, vol. 6, p. 262 

 (type, O. longissimum) . 



1845. Anilios Gray, Catalogue of the specimens of lizards in the collection of the 

 British Museum, p. 135 (type, A. australis; not Anilius Oken, 1816). 



1845. Meditoria Gray, ibid., p. 130 (type, T. nasutus). 



The species of blirxdsnakes occurring in the territory under consid- 

 eration may be distinguished as follows : 



A single preocular; anterior border of ocular convex lumbricalis (p. 308) 



Two preoculars; anterior border of ocular concave pusillus (p. 311) 



TYPHLOPS LUMBRICALIS (Linnaeus) 



Figure 87 



1758. Anguis lumbricalis Linnaeus, Systema naturae, ed. 10, vol. 1, p. 228 (type 

 locality, America); ed. 12, vol. 1, p. 391, 1766. 



1830. Typhlops cubae Bibron, in de la Sagra's Historia fisica, politica y natural 

 de la isla de Cuba, vol. 4, Reptiles, p. 122, pi. 22 (French ed. p. 204) (type 

 locality, Cuba). 



1844. Typhlops lumbricalis Dum^ril and Bibron, Erp^tologie gln^rale, vol. 6, 

 p. 287 (part). — Dum£ril, Catalogue m6thodique de la collection des reptiles 

 (Mus. Paris), p. 205, 1851 (part). — Boulenger, Catalogue of the snakes in 

 the British Museum, vol. 1, p. 31, 1893 (part).^MEERWARTH, Mitth. Naturh. 

 Mus. Hamburg, vol. 18, p. 5, 1901 (part). — Barbour, Proc. Biol. Soc. Wash- 

 ington, vol. 28, p. 77, 1915; Mem. Mus. Comp. ZooL, vol. 47, No. 2, p. 185, 



