STREPTOPHORUS. 101 
STREPTOPHORUS. 
Streptophorus, Dum. Mém. Ac. Sc. xxiii. p. 468 (1858). 
Ninia, Baird & Girard, Cat. N.-Amer. Snakes, 1853, p. 49. 
1. Streptophorus atratus. 
Serpentula ceylonica, Seba, Thes. i. p. 20, t. 11. 
Coluber atratus, Hallow. Proc. Ac. N. Sc. Phil. 1845, p. 245. 
Streptophorus atratus, Cope, Proc. Ac. N. Sc. Phil. 1861, p. 76. 
Ninia atrata, Cope, Journ. Ac. N. Sc. Phil. viii. p. 145 (1876). 
Streptophorus sebe, Dum. & Bibr. Erpét. vii. p. 515; Giinth. Col. Sn. p. 16, and Ann. & Mag. N. H. 
1872, ix. p.18; Peters, MB. Ak. Wiss. Berl. 1859, p. 924; Jan, Arch. per la Zool. ii. p. 27 
(1862), and Iconogr. Ophid. xii. t. 3. fig. 4, fig. 5 (var. maculatus), fig. 6 (var. collaris), xiii. 
t. 1. fig. 1 (var. drozii); Bocourt, Miss. Sc. Mex., Rept. p. 546, t. 32. fig. 7, t. 33. fig. 1; 
Cope, Proc. Ac. N. Sc. Phil. 1861, p. 76. 
Ninia sebe, Cope, Journ. Ac. N. Sc. Phil. viii. p. 145; Garman, Mem. Mus. Comp. Zool. viii. no. 3, 
p- 95 (1883). 
Streptophorus drozii, Dum. & Bibr. Erpét. vii. p. 518; Giinth. Col. Sn. p. 16. 
Streptophorus lansbergi, Dum. & Bibr. Erpét. vii. p. 518; Jan, Arch. per la Zool. ii. p. 27 (1862), 
and Iconogr. Ophid. xiii. t. 1. fig. 2; Bocourt, Miss. Sc. Mex., Rept. p. 551, t. 32. figg. 9, 
9 a-c. 
Elapoidis fasciatus, Hallow. Journ. Ac. N. Se. Phil. iii. p. 35, t. 4 (lower figure) (1855). 
Streptophorus maculatus, Peters, MB. Ak. Wiss. Berl. 1861, p. 924; Bocourt, Miss. Sc. Mex., 
Rept. p. 548, t. 32. figg. 8, 8 a—d, t. 33. figg. 2-4. 
Streptophorus labiosus, Bocourt, Miss. Sc. Mex., Rept. p. 550, t. 32. figg. 6, 6 a-f. 
Head rather depressed, not very distinct from neck. Anterior frontals very small. 
Seven upper labials, the third and fourth entering the orbit (the third labial occasionally 
divided into two). Two postoculars. Temporals 1+2. Two pairs of chin-shields. | 
Scales strongly keeled, in nineteen rows. Ventrals 135-153; anal entire. Upper 
parts of the head and neck black, with a yellow collar. The coloration of the 
body varies : 
a. Var. atratus, lansbergu. 
Hab. Honpuras, Puerto Caballo (Mus. Brit.); Costa Rica, San José (Van Patten).— 
CotomBiA (Mus. Brit.) ; Vennzvn.a (Hallowell), Caracas (Mus. Brit.) ; WHrsTERN 
Ecuapor (fraser). 
Lower parts uniform whitish; upper parts uniform blackish; collar sometimes very 
indistinct. Ventrals 152-157. 
B. Var. labiosus. 
Hab. Guatemata (Bocourt). 
A narrow dark band or series of spots along the middle of the abdomen ; upper parts 
uniform black; collar very indistinct. Ventrals 153. 
One specimen in the British Museum. 
