SYSTEMATIC LTST AND SYNONYMY. 17$ 



SOLENOGLYPH A— Continued. 



Var. pugnax 



Toxicophia pugnaa B. & G., 1853, Serp., pp. 20, 156; Bfl., 1859, P. R. R 

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

 Checklist, 34. Trigonocephaly piscimrus var. pmjiut.r Jan, 1863, Sist., 

 125. 



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

 mouth. Thiol 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 ba nil obsolete. Ventrals 145. Suhcaudals 

 22, plus 23 pairs. Scales in 25 rows. 



Texas. 



AnCISTEODON BILINI!ATnS 



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

 101 ; 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 hand 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, L803, Kept., V, 351; AVagh, 1830, Syst., 175; D. & B., 1854, 

 Erp., VII, 1483; dray, 1849, Cat., 13. OraspedocepluUvs Gray, 1825, 

 Ann. Phil., 205. 



Lachesis mitts 122 



Qrotaius mvtus Linn., 170(1, Syst., I, 373; Gmel., 1788, Syst. Linn., I, 

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

 Mag. /.oi,l., Extr., p, 29. TMehesis mvtut Hand., 1803, Kept., V, 351; 

 Wagl., 1830, Syst.. 175; Gray, ls42, Zool. Misc., 50, — 1849, Cat., 13; 

 D. * 1'.., 1854, Erp., VII, 1485; Mart., 1850, Mus. Herb, 35; Cope, 

 1859, Pr. Phil. Ac-.. 339; Jan, 1803, Sist., 124. Lachesis rhombeatus 

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

 - 1843, Syst., 29; Gray, 1831, Syn. Rept., 79. Oraspedocephalus ero- 

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

 Syst., 154. Bothrops sum, -a en Wagl., 1824, Spix. Serp. bras., p. 50, pi. 

 23? /.'.'« muta LaC, I7>9, Quad. Ovip. Serp., II, 389. /<'<« crotalina 

 Shaw, 1802, Zool., HI, 352. Scytal catenate Latr., 1801, Kept., Ill, 

 162. Trigonocephaly rhombifer Cuv., 1829, K. An. II, 90. 



Brazil to Mexico. 



Var. stenoi'iiuvs 123 



Lachesis stenophrys Cope, l s 75. Jour. Phil. Ac, 152. 



Central America. 



