28. coPpHtas. 419 
and wedged in between the third and fourth labials; temporal 
shields five; five upper labials, fifth largest; four lower labials ; 
chin-shields, one anterior and two pairs, the first pair forming a 
suture. Scales quadrangular, juxtaposed, narrow on the back and 
sides, broader on the belly; thirty scales round the middle of the 
body and fifty from occiput to base of tail. A pair of enlarged 
pectoral shields. Preanals elongate, three, the median sometimes 
divided into two. Male with two preanal pores on each side. Tail 
obtuse at the end, covered with scales like those of the body. 
Brown ; back lighter, with two or three longitudinal darker lines. 
millim, millim. 
Total length ...... 120 From end of snout 
Head 9 \aieat ets aks 7 to vent ........ 63 
Width ofhead .... 4:5 Fore limb........ 3 
From end of snout to Hind limb........ 25 
fore limb ...... 14 Baal: a's aapassing wares 57 
Guianas ; Venezuela. 
a-b. SQ. Cayenne, 
ec. Her. Caracas. Paris Museum [P.]. 
4. Cophias dorbignyi. 
Bachia dorbignii, Gray, Cat. p. 58. 
Chalcides dorbignyi, Dum. § Bibr. p. 462; A. Dum. Cat. Méth. 
Rept, p. 146. 
Fore limb with four (or three) digital tubercles; hind limb extremely 
minute, undivided. Rostral large, rather projecting ; frontonasal 
rather small, trapezoid, as broad as long; frontal large, pentagonal, 
longer than broad; parietals large; no interparietal ; two supra- 
oculars ; nasal more than twice as broad as high; loreal not half 
the size of latter; infraorbital triangular, wedged in between the 
third and fourth labials; temporal shields five ; five upper and three 
lower labials; chin-shields, one anterior and two pairs, first pair 
forming a suture. Dorsal and lateral scales elongate hexagonal, 
overlapping ; twenty-eight scales round the middle of the body, and 
fifty from occiput to base of tail. A pair of enlarged pectoral 
shields. Praeanal shields three, median narrowest. Tail long, 
obtuse at the end, covered with scales similar to the dorsals. Back 
brownish white, sides and lower surfaces reddish brown ; three red- 
dish brown lines along the back. 
millim. millim. 
Total length ....:. 158 From end of snout 
Head 44... seawws 7 to vent ........ 71 
Width of head .... 4:5 Fore limb........  2°5 
From end of snout to Hind limb........ 15 
fore limb ...... 14 IP aa: s,s sec lre tons 87 
Chili ; Venezuela. 
a-b. QP? Baranquilla. Mr. Rippon [C.}. 
282 
