113. @EropuHIs. all 
long as its distance from the end of the snout, much shorter than 
the parietals ; a small supraocular ; loreal twice and a half as long 
as deep ; one postocular ; six upper labials, third and fourth entering 
the eye; four lower labials in contact with the anterior chin-shields, 
which are longer than the posterior and separated from the sym- 
physial. Scales i in 15 rows, smooth on the nape, finely striated and 
keeled on the body and tail, the keels quite strong on the posterior 
part of the back and on the base of the tail. Ventrals 131-138; 
anal entire; subcaudals 39-46. Black above, with two alternating 
series of large yellowish spots, some of which are confluent and 
form cross bars; belly uniform white, tail blackish. 
Total length 290 millim. ; tail 35, 
Costa Rica. 
a-b. 9 (V. 135, 138; C. ?, 46). Cartago, Costa Rica. 
9. Geophis petersii. (Prare XVI. fig. 2.) 
Geophis chalybea, part., Giinth. Biol. C.-Am., Rept. p. 87 (1893). 
Maxillary not extending beyond palatine in front, the first tooth 
corresponding to the suture between the second and third labial 
shields. Eye very small, measuring two thirds to three fourths 
its distance from the mouth. Snout obtusely pointed, pro- 
minent. Rostral slightly deeper than broad, the portion visible 
from above measuring three fourths its distance from the 
frontal; internasals twice as broad as long, one third the length 
of the prefrontals, which are as-long as broad; frontal as long 
as broad, a little longer than its distance from the end of the 
snout, as long as the parietals; a small supraocular; loreal twice 
and a half as long as broad; one postocular; six upper labials, 
third and fourth entering the eye; three lower labials in contact 
with the anterior chin-shields, which are not longer than the pos- 
terior and separated from the symphysial. Scales in 15 rows, 
smooth, a few at the base of the tail faintly keeled. Ventrals 144— 
145; anal entire; subcaudals 35-36. Uniform dark brown above, 
white beneath. 
Total length 200 millim. ; tail 28. 
Mexico. 
a-b. 3 (V. 144; C. 36) City of Mexico. Mr. Doorman [C.}. 
& 2 (V.145; 0.35). 
10. Geophis championi. (Puare XVI. fig. 3.) 
Geophis chalybea, part., Giinth. Biol. C.-Am., Rept. p. 87 (1893). 
Maxillary not extending beyond palatine in front, the first tooth 
corresponding to the suture between the second and third labial 
shields. Eye very small, measuring two thirds its distance from 
the mouth. Snout obtusely pointed, prominent. Rostral a little 
VOL. Il. Y 
