98 COLUBRID. 
; .193,184; 0.89, Sara N.E. Peru. Mr. W.Davis[C.]; 
“Egy (V. ’ ; ’ yacu, sos. Le 
g-m, n-o.  (V.191,189; Moyobamba, N.E. Mr. t H. Roff 
C. 98, 96), 9 (V. 192, eru. [C.}. 
189, 190; CO. 89, 82, P), 
her. (V. 194, 182; ©. 96, 
0: 98). yg. (V. 175; 
p. 2 (V. 187; C. 78). Santarem. H. “ih Bates, Esq. 
. do (V.192; C. 94). Upper Amazon. og “Se 
ty © (V. 186, 194, 187; Rio Ucayali. Epa A. Goldi 
O. 87, 82, 82). ¥ 
u. Yg. (V. 190; 0. 90). Upper Amazon. ae p Bartlett 
v. ¢ (V. 190; C0: 97). Madre de Dios, Bolivia. ig 
w. 3 (V. 194; C. 98). Charobamba, Bolivia. 
x. Hgr. (V. 192; C. 97). Para. R. Graham, Esq. 
i Bowachea 
y-z. d (V. 184,179; 0.89, 8S. America. . Bowerbank, 
84), Crete Esq. [P.]. 
153. CHAMZATORTUS. 
Chameetortus, Giinth. Proc. Zool. Soc, 1864, p. 810. 
Maxillary teeth 12, gradually and feebly increasing in length, 
followed, after a short interspace, by a large grooved fang situated 
below the posterior border of the eye; mandibular teeth subequal. 
Head distinct from neck; eye large, with vertically elliptic pupil ; 
posterior nasal concave; loreal entering the eye. Body compressed ; 
scales smooth, with apical pits, in 17 rows; ventrals obtusely 
angulate laterally. Tail long; subcaudals in two rows. 
East and Central Africa. 
.1. Chametortus aulicus. 
Chameetortus aulicus, Giinth. J. c. pl. xxvi. fig. 2; Peters, Reise n. 
Mossamb. iii. p. 128 (1882). 
Rostral nearly twice as broad as deep, just visible from above ; 
internasals a little broader than long, a little shorter than the 
preefrontals; frontal once and two thirds to twice as long as broad, 
longer than its distance from the end of the snout, shorter than the 
parietals ; loreal a little longer than deep, bordering the eye below 
a small preocular; two postoculars; temporals 1+1; eight upper 
labials, third, fourth, and fifth entering the eye; five lower labials 
in contact with the anterior chin-shields, which are a little longer 
than the posterior. Scales in 17 rows. Ventrals 172-195; anal 
entire ; subcaudals 81-95. Brown above, the back with numerous 
whitish, dark-edged cross-bars, the sides spotted with whitish; head 
whitish, spotted and marbled with brown, and with a brown streak 
on each side, passing through the eye; labials edged with brown; 
beneath white, | 
