164 COLUBRID. 
. Rhadinza breviceps. 
Liophis breviceps, ee Proc. Ac. Philad. 1860, p. 252. 
Ophiomorphus breviceps, Cope, Proc. Ac. Philad. 1862, p. 75. 
Eye rather small; rostral broader than deep, just visible from 
above ; internasals broader than long, a little shorter than the pra- 
frontals; frontal not quite once and a half as long as broad, longer 
than its distance from the end of the snout, slightly shorter than 
the parietals ; latter as long as their distance from the rostral ; 
loreal deeper than long ; one pre- and two postoculars; temporals 
1+2>; six or seven upper labials, third and fourth entering the eye ; 
four lower labials in contact with the anterior chin-chields, which 
are as long as or a little longer than the posterior. Scales in 17 
rows. Ventrals 154; anal divided; subecaudals 48-54. Length of 
tail 53 to 5% times in the total length. Brown above, the scales 
edged with black, with more or less regular narrow black cross bands ; 
below with black and white (red ?) cross bands of subequal width. 
Total length 450 millim. ; tail 80. 
Ecuador ; Surinam. 
a. 6 (V. 154; C. 48), W. Ecuador. Mr. Fraser [C.]. 
b, 2 (V. 154; C. 48). Palltanga, Ecuador. Mr. Buckley [C.]. 
3. Rhadinza calligaster. 
Contia calligaster, Cope, Journ. Ac. Philad. vill. 1876, p. 146, 
pl. xxviii. fig. 12. = Ban 
Snout narrowed; one nasal shield; loreal subquadrate; one 
pre- and two postoculars: temporals 1+1 or 1+2; seven upper 
labials, third and fourth entering the eye; anterior and posterior 
chin-shields equal. Scales in 17 rows. Ventrals 152; anal divided ; 
subcaudals 46. Dark brown above, with a narrow black vertebral 
stripe; two lateral paler stripes; a black stripe along the ends of the 
ventrals; labials broadly black bordered; belly yellow, with a 
series of black crescents on the median front of each suture; middle 
line of tail below black. 
Pico Blanco, Costa Rica. 
4, Rhadinea mimus. 
Opheomorphus mimus, Cope, Proc. Ac. Philad. 1868, p. 307. 
Snout short; internasals broader than long; frontal shorter 
than parietals; loreal very small or absent; one pre- and two 
postoculars ; ; temporals 14+2; seven upper labials, third and fourth 
entering the eye. Scales in ]5 rows. Crimson, each scale with a 
brown spot near its tip; ten black rings on the body, complete 
across the belly ; head above and spot below eye black. 
Total length 340 millim.; tail 60, 
Andes of Ecuador or Colombia. 
