88 BULLETIN 32, UNITED STATES NATIONAL MUSEUM. 



Ophryacus Cope, gen. nov. 



This genus differs from Bothrops in the prolongation of one of the superciliary scales 

 into a horn-like process. 



Ophryacus undulatus Jan, Cope, loc. cit. ; ^<rop«s MnduZafus Jan, Rev. et Mag. de 

 Zool., 1859, p. 157 ; Prodr. Icon, des Oph., p. 1.57. 



Central Mexico, Sumichrmt ; Actopam, Vera Cruz, Comision Geogrdfica Exploradora. 



Bothriechis Peters. 



Thamnocenehris Salvin, Proc. Z. S., London, 1860, 459. 



Bothriechis nigroviridis Peters, Monats. K., Preuss, Akad., 1859, p. 278; Cope, Proc. 

 Acad. Phila., 1859, p. 345; Journ. Acad. Phila., 1875, p. 150. 

 Costa Rica, Gahb, Van Patten. 

 Bothriechis AURIFER Salvin, Cope, Proc. Acad. Phila., 1871, p. 205; Thamnocenehris 

 aurifer Salvin, Proc. Zool. Soc. London, 1860, p. 459 tab. ; Ann. Mag. Nat. Hist., 

 1861, p. 325. 

 Peten, Guatemala, Saii'in. 

 Bothriechis lateralis Peters, Monats. K., Akad. Preuss., 1862, p. 674; Bothrops ii- 

 Uneatus Peters, loc. cit., 1859, p. 278 ; ? Bothrops hicolor Bocourt, Ann. des Sci. Nat., 

 1868, p. 201. 

 Western Guatemala, Bocourt. 

 Bothriechis bernouilii Miiller, Mittheilungen a. d. Herpet. Sammlung Mus. Basel 

 (sine origine et dato), p. 11, pi. iii, tig. A. 

 West coast of Guatemala, Bernouilii. 



Bothriopsis Peters. 



Monats. Akad. Berlin, 1851, p. 359 ; Cope, emend. Proc. Acad. Phila., 1871, p. 208. 

 Bothriopsis scutigera Fischer; Bothriechis scutigera Fischer, Archiv. f. Naturge- 

 schichte, 1880, p. 208, pi. viii, tigs. 8, 9. 

 Guatemala, Fischer. 

 Bothriopsis godmani Giinther ; Bothriechis godmani Giinther, Ann. Mag. Nat. Hist., 

 1861, vii, p. 325 ; Bothriopsis godmani Cope, loc. cit. 

 Guatemala, Hague. 

 Bothriopsis trianguligera Fischer; Bothriechis trianguUgera Fischer, Oster. , Pro- 

 granim. des Akad. Gymnasiums, Hamburg, 1883, sep., p. 13. 

 Guatemala, Peper. 

 Bothriopsis ophryomegas Bocourt, Cope, Proc. Acad. Phila., 1871, p. 208 ; Bothrops 

 ophryomegas Bocourt, Ann. Sci. Nat., 1868, p. 201. 

 " Central America," Bocourt. 

 Bothriopsis AFFiNis Bocourt, Ann. Sci. Nat., 1868, p. 201 ; B. affinis Cope, Journ. Acad. 

 Phila., 1875, jx 150; Tehuraspis mexicanus Cope, Proc. Acad. Phila., 1859, p. 339. 

 Bothriechis mexicanus Cope, loc. cit., 1860, p. 345; nee Atropus mexicanus Dum. et 

 Bibr. 

 Mexico, as far north as Tuxpan, and Central America to Costa Rica ; Sartorius, Sumi. 

 chrast ; Zacualtipan, Bemad. 

 BoTinaoPSis mexicanus Dum., Bibr., Cope, loc. cit., 1871, p. 209; Atropus mexicanus 

 Dum et Bibr., Erp. Gca., viii, p. 1521, tab. 83, bis; fAiropos nummifer Riippel, 

 Verzeicbn. Seuck. Miis. Frankf., p. 21 ; Fischer, xVrchiv f. Naturg., 1880, p. 22, viii, 

 figs. 10-12 ; (var.) Ttleuraspis nummifer Giinther, Ann. Mag. Nat. Hist., 1867, 

 March, tab. iii, f. c. ; nee Copei, Proc. Acad. Phila., 1859, 339, et 1860, 'M^^^B. 

 affinis Bocourt. 

 Tierra Caliente of Mexico ; Guatemala, Hague. 



