AND REPTILES FROM COLOMBIA, 817 
22. ELAPS SPURRELLI, sp.n. (PI. IT. figs. 3, 3a.) 
Hye nearly as long as its distance from the mouth. Rostral 
much broader than deep, scarcely visible from above; frontal 
broader than the supraocular, once and a half as long as broad, 
longer than its distance from the end of the snout, shorter than 
the parietals ; latter as long as their distance from the end of 
the snout ; one pre-and two postoculars ; temporals 1+1; seven 
upper labials, third a little deeper but not larger than the fourth, 
third and fourth entering the eye ; four lower labials in contact 
with the anterior chin-shields, which are as long as the posterior. 
Scales in 15 rows. Ventrals 232; anal divided; subcaudals 36. 
52 black annuli separated by white areas on the body and by red 
on the tail; the first annulus, on the nape, much broader than 
the others, which are narrower than the white interspaces on the 
belly and broader on the back ; a few small black spots between 
the black rings on the back; sides of head, as far back as the 
second temporal and the middle of the parietal, black, with a 
white spot on the second, third, and fourth upper labials ; a white 
middle line on the head, forming a { with a broad white bar 
across the occiput. 
Total length 230 mm. ; tail 20. 
A single female specimen. 
23. LACHESIS SCHLEGELIL Berth. 
EXPLANATION OF THE PLATES. 
Prate I. 
10h, il Atelopus spurrelli, p. 813. Nat. size, upper and lower views. 
2. Lepidoblepharis intermedius, p. 814. 14 nat. size. 
3,3a. Polychrus spurrelli, p.814, Side view of head and anterior part of body, 
nat, size, and upper view of head, 13 nat. size. 
Prats IT, 
Figs.1, la. Leptophis brevior, p. 815. Upper view of head and anterior part of 
body, nat. size, and side view of head, 2. 
2,2a, Homalocranium nigrum, p. 816. Upper view of head and anterior part 
of body, X 2, and side view, X 3. 
3,3. Hlaps spurrelli, p.817. Upper and lower views of head and anterior 
part of body, X 2, and side view, X 3. 
