BOTHRIECHIS. 189 
1. Bothriechis schlegeli. 
Trigonocephalus schlegelit, Berthold, Abhandl. Ges. Wiss. Gottingen, il. p. 13, t. 1. figg. 5, 6 
{1847).: 
Teleuraspis schlegelii, Cope, Proc. Ac. N. Sc. Phil. 1859, p. 388; Journ. Ac. N. Se. Phil. viii. 
pp. 149, 157, t. 27. fig. 2 (1875). 
Bothrops schlegelit, Jan, Iconogr. Ophid. xxvii. t. 6. fig. 2. 
Lachesis nitida, Giinth. P. Z. S. 1859, p. 414, t. 20. fig. C. 
Bothrops (Teleuraspis) nigroadspersus, Steind. SB. Ak. Wiss. Wien, Ixii. p. 348, t. 8 (1870). 
Hab. Guatemata (Godman); Nicaragua, Chontales Mines (Rix), Hacienda Rosa de 
Jerico, alt. 3250 feet (Rothschuh); Costa Rica (Salvin); Panama, Chiriqui 
(Champion), Veraguas and Panama (Cope).—Soutn America to Ecuador. 
Specimens of this species vary considerably in the number of scales (19-25), the 
development of keels and spinosity of the scales of the head, and in coloration. One 
specimen from Chontales is an albino, being almost entirely of a lemon-yellow colour: 
an anomaly which occurs also in the West-African Viperine Snake, Atheris chloroéchis. 
2. Bothriechis nigroviridis. 
Bothriechis nigroviridis, Peters, MB. Ak. Wiss. Berl. 1859, p. 278; Cope, Journ. Ac. N. Sc. Phil. 
vii. p. 150 (1875). 
Hab. Costa Rica, Volcan de Barba (Hoffmann), Pico Blanco (Gabb), Rio Sucio and | 
Volcan de Irazu (Rogers). 
Feeds on frogs. 
3. Bothriechis lateralis. 
Bothrops bilineatus, Peters, MB. Ak. Wiss. Berl. 1859, p. 278 (nec Wied). 
Bothriechis lateralis, Peters, MB. Ak. Wiss. Berl. 1862, p. 674; Cope, Bull. U. S. Nat. Mus. 
no. 32, p. 88. 
Hab. Costa Rica (Hoffmann, Salvin). 
4, Bothriechis bicolor. 
Bothrops bicolor, Bocourt, Ann. Se. Nat. (5) x. p. 201 (1868). 
Bothrops (Bothriechis) bernoullit, Mill. Verh. naturf. Ges. Basel, vi. p. 399, t. 3. fig. A (head) 
(1878). 
Hab. Western GuateMa.a, forest of San Agustin, in the Department of Solola 
(Bocourt), Cuesta de Atitlan (Miller). 
5. Bothriechis aurifera. 
Thamnocenchris aurifer, Salv. P. Z. 8. 1860, p. 459, t. 32. 
Bothriechis aurifer, Cope, Proc. Ac. N. Se. Phil. 1871, p. 205. 
Hab. Guatemata, Coban (Salvin). 
