<<< ——<« —_— 
110. TRoprpopresas. 297 
caudals 51-74. Black, with 16 to 30 white (red), usually black- 
dotted arnuli, which may be interrupted on the belly ; snout and 
chin black ; throat, and a bar across occiput or nape, white (red). 
Total length 620 millim.; tail 140. 
Mexico and Guatemala. 
A. Most of the annuli interrupted on the belly. 
a, 29 (V.170; C. 51). Mexico. (One of the types of 7. fasczata.) 
Loreal shield entering the eye, between two przeoculars, on one side, 
separated from the eye by the preoculars on the other side. 
b. 2 (V. 190; C.56). Yucatan. 
Loreal bordering the eye on both sides. 
ce. 2 (V. 182; C. 56). Zoological Society. 
Loreal shield entering the eye, between two preoculars, on one side, 
separated from the eye by the preeoculars on the other side. 
B. Annuli all complete. 
d. § (V.18i; C.68). Hacienda Cubilgiitz, north F. C. Sarg, Esq. 
of Coban, Vera Paz. (feats 
Loreal bordering the eye on both sides. 
e, 5 (V.179; C. 66). Orizaba. 
Loreal bordering the eye, longitudinally cleft. 
5. Tropidodipsas annulifera. (Prater XIV. fig. 1.) 
Eye moderate. Rostral a little broader than deep, just visible 
from above; internasals half the length of the prefrontals ; frontal 
as broad as long, slightly shorter than its distance from the end of 
the snout, much shorter than the parietals; loreal once and a half 
as long as deep, entering the eye; prefrontal entering the eye; no 
preocular; two postoculars; temporals 1+2 or 3; six or seven 
upper labials, third or fourth or fourth and fifth entering the eye ; 
four or five lower labials in contact with the anterior chin-shields, 
which are once and a half as long as the posterior. Scales smooth, 
in 15 rows. Ventrals 156; anal entire; subcaudals 52. Black, 
with 20 white (red?) complete annuli, which are broader on the 
belly than on the back ; throat, and a band across the occiput, white. 
Total length 480 millim.; tail 90. 
Habitat unknown. 
@ @ (V.106; C. 52). —? Zoological Society. 
6. Tropidodipsas anthracops. 
Leptognathus anthracops, Cope, Proc. Ac. Philad. 1868, pp. 108 & 
156. 
Physiognomy of 7’. sartorii. Frontal longer than broad ; loreal 
longer than deep, entering the eye ; no procular ; two postoculars ; 
temporals 1+2; seven upper labials, fourth and fifth entering the 
eye, sixth largest. Scales smooth, in 13 rows. Venutrals ees 
anal entire; subcaudals 76. Black, with yellow rings continuous 
on the belly, but not on the anterior parts above; yellow scales 
black-edged ; temples and nape yellow. 
Total length 480 millim.; tail 130. 
Nicaragua. 
