SYSTEMATIC LIST AM) SYNONYMY. 133 



O P H I D I A— Continued. 



vertebra] broader. Ventrals 266 to 271. Subcaudals 36 to 52, entire. 

 Yellowish, reddish, or greyish brown, light to dark, punctulate and 

 clouded with darker, with irregular transverse badly defined hands of 

 darker, which are often confluent hit" inure or less distinct longitudinal 

 bands on the sides of the neck. Belly olivaceous, Becked with lighter. 

 Tail sometimes transversely banded. Some specimens are nearly uni- 

 form in coloration, very light to almost uniform black. The specimens 

 described were large ones from Porto Rico. Reiuhardt's specimens had 

 264 to -71 ventrals, and 67 to 69 subcaudals. The tail is shorter in the 

 adult, and commonly the tip is imperfect. 



West Indies; (?) Central America; (?) Mexico. 



ACACOPHIDIA. (Non-venomous Snakes.) n 



COLUBRIDAE 11 



Bonap., 1831, Saggio, etc. 



DIPSADINAE 11 



Lbptognathus 12 



Dum., 1852, Mem. Acad., 23, p. 467; D. & B., 1854, Erp., VII, 473; 

 Gthr., 1858, Cat., 177. 



Leptognathus pasciatus '. 12 



Tropitlodipsus fasciata Gthr., 1858, Cat, 181. Leptognathus philippii 

 Jan, 1863, Sist., 101, — 1870, Icon., livr. 37, pi. 5, f. 1. L. fasciata 



Cope, 1868, Pr. Phil. Ac, 137. 



Mexico; Central America. 



Leptognathus dumemlit (?) 13 



Jan, 1863, Sist., Ull, — 1870, Icon., livr. 37, pi. 5, f. 2. 



Mexico. 



Leptognathus nebulatus 13 



Gthr., 1858, Cat, 177; Cope. 1868, Pr. Phil. Ac, 136. 



Coluber nebuhtus Linn., 1754. Mus. Ad. Fridr., 32, pi. 24, f. 1, — 1758, 



Syst, I, 222, — 1766, Syst:, I. 383; Weigel, 1782, Abb. Hall. Nat. 



Ges., I. 32; Mus. Linck, 1783, I, 75; Gmel., 1788, Syst. Linn., I, 1107; 



Shaw, 1802, Zool., Ill, 476; Latr., 1802, Kept., IV, 164; Daud., 1803, 



Rept, VI, 435; Men-., 1820, Syst., 104. Cerastes nebuhtus Laur., 1768, 



Synops., 83. Sihon nebulaius Fitz., 1S26, Neue Class., 60. Dipsas 



nebiOata Boie, 1827, Lis, XX, 550; S. hi., 1837, Essai, I, 162,11, 275, 



pi. 11, f. 14, 15; DeFil., 1S40, Cat. Serp. Petahgnathm nebuhtus 



Dum., 1852, Mem. Acad., XXIII. 466; D. &B., 1S54, Erp., VII, 464; 



Marten-, 1856, Mus. Hell.. 27. 



Seba. 17:: 1, Thcsaur., I, 22, pi. 14, f. 4, — 1735, pi. 29, f. 3; 



Scheuch., 1735, Phys. Sacr., IV, 1532. pi. 74S, f. 8; Liun., 1749, Amoen. 



Acad., I, 304; Daub., 1771, Diet. Anim., 657, 679; LaC, 1789, Quad. 



Ovip. A: Serp.. IT. 271. 307; Bonnat, 1789, Ophiol. 36, pi. 20, f. 38; 



Me,,-.. 1790, Beitr., I, 31, pi. 8; Bechst, 1802, Ueb. LaC. Nat, IV, 39, 



96, pi. 4, f. 2. 



Brazil to Mexico; West Indies (Gthr.) 



