SYSTEMATIC LIST AND SYNONYMY. 179 



SOLENOGLYPH A-Continued. 



Var. pugnax 



Toxicophis pugnax B. & G., 1853, Serp., pp. 20, 156; Bd., 1859, P. E. R 

 Rep., X, pi. 25, f. 14. Toxicophis piscivorns subsp. pugnax Cope, 1875, 

 Checklist, 34. Trigonocephalus piscivorus var. pugnax Jan, 1S63, Sist., 

 125. 



No loreal. Second labial with a narrow edge or acute angle at the 

 mouth. Third and fourth labials in orbit. Light olive-brown above ; 

 yellowish, with brownish blotches on each side, beneath. Tail black. 

 About thirty blotches of darker on the back. Margins irregular, 

 often indistinct. Cheek band obsolete. Ventrals 145. Subcaudals 

 22, plus 23 pairs. Scales in 25 rows. 



Texas. 



Ancistrodon bilineatus 



Guenther, 1863, Ann. Mag. Nat. Hist., 364; Cope, 1865, Pr. Phil. Ac, 

 191 ; Sumichrast, 1881, Bull. Soc. Zool. de France, 185. 



" Shining deep black, with scattered white spots, arranged in nar- 

 row, distant, transverse bands; the white spots are more numerous 

 and irregular on the belly ; a yellow line runs from the rostral along 

 the canthus rostralis and the supraciliary edge to behind the angle 

 of the mouth. A yellow band along the upper labials, the lower 

 margin of which is black. Rostral, with a vertical yellow band, 

 continued -on the chin. Upper labials eight. Scales keeled, in 23 

 series. Ventrals 137 ; subcaudals 65, the fourteen last double." 



Western Mexico ; Isthmus of Tehuantepec. 



Lachesis 122 



Daudin, 1803, Rept., V, 351; AVagl., 1830, Syst., 175; D. & B., 1854, 

 Erp., VII, 1483; Gray, 1849, Cat., 13. Craspedocephalus Gray, 1825, 

 Ann. Phil., 205. 



Lachesis mutus 122 



Crotalus mutus Linn., 1766, Syst, I, 373; Gmel., 1788, Syst. Linn., I, 

 1082; Schleg., 1837, Essai, II, 570, pi. 20, f. 19, 20; Jan, 1859, Rev. 

 Mag. Zool., Extr., p, 29. Lachesis mutus Daud., 1803, Rept., V, 351 ; 

 Wagl., 1830, Syst, 175; Gray, 1842, Zool. Misc., 60, — 1849, Cat, 13; 

 D. & B., 1854, Erp., VII, 14S5; Mart., 1856, Mus. Berk, 35; Cope, 

 1859, Pr. Phil. Ac, 339; Jan, 1863, Sist, 124. Lachesis rhombeatus 

 Max., 1824, Abbild. Bras. lief. 5, pi. 5; Fitz., 1826, Neue Class., 63, 

 — 1843, Syst, 29 ; Gray, 1831, Syn. Rept., 79.' Craspedocepludus cro- 

 talinus Gray, 1825, Ann. Phil., 205. Cophias crotalina Merr., 1820, 

 Syst., 154. Eolhrops surucucu Wagl., 1824', Spix. Serp. Bras., p. 59, pi. 

 23 ? Boa inula LaC, 1789, Quad. Ovip. Serp., II, 389. Boa crotalina 

 Shaw, 1802, Zool., Ill, 352. Scytale catenatus Latr., 1801, Rept., Ill, 

 162. Trigonocephalus rhombifer Cuv., 1829, R. An. II, 90. 



Brazil to Mexico. 



Var. stenophrys 123 



Lachesis stenophrys Cope, 1875, Jour. Phil. Ac, 152. 



Central America. 



