112. arractvs. 303 
from the end of the snout, shorter than the parictals; loreal short, 
not or but slightly longer than deep; one postocular ; temporals 
1+2; six upper labials, third and fourth entering the eye; three 
or four lower labials in contact with the single pair of moderately 
large chin-shields, which are separated from the symphysial: Scales 
in 15 rows. Ventrals 144-167; anal entire; subcaudals 23-37. 
Black above, with light annuli which widen towards the belly ; or 
reddish with black annuli disposed in pairs; belly barred black and 
yellow. 
Total length 610 millim. ; tail 60. 
Ecuador and Brazil. 
a. & (V. 144; C. 29). W. Ecuador. Mr. Fraser [C.]. 
(Type.) 
bo ON (¥. 167 s C: 26), Canelos, Ecuador. Mr. Buckley [C.}. 
e. d (V. 163; C. 37). — Pebas. Mr. Hauxwell [C.]. 
d. @ (V. 155; C. 28). Upper Amazon. Mr. E. Bartlett [C. ]. 
2. Atractus latifrons. 
Geophis latifrons, Giinth. Ann. § Mag. N. H. (4) i. 1868, p. 415, 
pl. xix. fig, B, and ix. 1872, p. 15. 
Snout rounded. Rostral rather large, a little broader than deep, 
the portion visible from above at least half as long as its distance 
from the frontal; internasals once and a half to twice as broad as 
long; frontal as long as broad or a little broader than long, as long 
as its distance from the end of the snout, shorter than the parietals ; 
loreal short, not or but slightly longer than deep; one postocular ; 
temporals 1+2,; six upper labials, third and fourth entering the 
eye; three or four lower labials in contact with the single pair 
of moderately large chin-shields, which are separated from the 
symphysial, “Scales in 17 rows. Ventrals 142-150; anal entire ; 
subeaudals 35-40. Body with black and yellow or red rings, which 
may be broken up and irregular on the belly, the scales on the red 
rings black-edged; head black above, with a yellow vertical bar 
in front of the eye, and a triangular yellow blotch on the temple, 
extending or not across the occiput. 
Total length 410 millim. ; tail 70. 
Upper Amazon. 
A. Black rings disposed in 12 to 17 pairs, each enclosing a narrow 
yellow interspace and separated by broad red rings; a yellow 
bar across the occiput. 
a. Hgr. (V. 150; C. 36). Pebas. Mr. Hauxwell [C.]. 
(Type.) 
6. Hgr. (V. 142; C. 85). Moyobamba. My. A. H. Roff [C.]. 
e, 6 (V. 1435) Ce2). Upper Amazon. Mr. E. Bartlett | C.]. 
B. Black rings 65, separated by narrow yellow rings; no ‘yellow 
across the occiput. 
d. 3 (V. 146; C. 40). Upper Amazon. H. W. Bates, Esq. [C.]. 
