220 COLUBRID. 
deep, visible from above; internasals not more than half as long as 
the prefrontals ; frontal hexagonal, obtuse-angled in front, acute- 
angled behind, once and one third to once and a half as long as 
broad, as long as or longer than its distance from the end of the 
snout, shorter than the parietals ; nostril between two nasals, the 
posterior very small and widely separated from the preocular; two 
postoculars ; temporals 1+1; seven upper labials, third and fourth 
entering the eye; first lower labial in contact with its fellow behind 
the symphysial ; four lower labials in contact with the anterior 
chin-shields, which are longer than the posterior. Scales in 15 
rows. Ventrals 143-180; anal divided; subcaudals 50-72. 
Whitish above, with large black spots or irregular cross-bands, or 
with two broad black stripes separated by a white vertebral line, or 
blackish, with whitish cross-bands ; end of snout whitish; a white 
occipital cross-bar, usually interrupted in the middle; lower parts 
white. 
Total length 470 millim. ; tail 80. 
Venezuela, Colombia, Ecuador. 
a-c. 9 (V. 159; C. ?). Colombia. Dr. J. G. Fischer. 
& yg. (V. 180, 168; 
C.'50, 57). 
d. 2 (V. 168; C.?). Carthagena. Hee Garth [P.]. 
( of H. : 
e. 2 (V. 166; C.?). Rosario de Cucuta. Mr. C. Webber [C.]. 
8. Homalocranium fuscum. 
Homalocranium melanocephalum, part., Jan, Arch, Zool. Anat. Phys. 
ii. 1862, p. 51, and Icon. Gén. 165, pl. ii. fig. 4 (1866); Giinth. 
Biol, C-Am., Rept. p. 147 (1895). 
—— melanocephalum, var. fuscum, Bocourt, Miss. Sc. Mex., Rept. 
p. 589 (1883). 
—— jani, Giinth. 1. c. p. 148, pl. lii. fig. D. 
—— armillatum, part., Giinth. 1. c. p. 149. 
Eye not half as long as the snout. Rostral a little broader than 
deep, visible from above; internasals about half as long as the 
prefrontals; frontal hexagonal, obtuse-angled in front, acute- 
angled behind, once and one third as long as broad, longer than its 
distance from the end of the snout, shorter than the parietals ; 
nostril between two nasals, the posterior of which is in contact 
with or separated from the prwocular ; two postoculars ; temporals 
1+1,; seven upper labials, third and fourth entering the eye ; first 
lower labial in contact with its fellow behind the symphysial ; four 
lower labials in contact with the anterior chin-shields, which are 
longer than the posterior, Scales in 15 rows. Ventrals 136-159; 
anal divided ; subcaudals 44-49. Brown above, with or without 
a light, dark-edged lateral line, with or without a blackish vertebral 
line ; head dark brown or blackish above, with yellow markings as 
in H. melanocephalum. 
Total length 245 millim. ; tail 50. 
Guatemala, Nicaragua. 
