164 COLtTBEID^. 



2. Rhadinsea breviceps. 



Liophis breviceps, Cope, Proc. Ac. Philad. 1860, p. 252. 

 Ophiomorphus brevieeps, Cope, Proa. 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 prae- 

 frontals ; frontal not quite onoe 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 prse- and two postooulars ; 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 ; suboaudals 48-54. Length of 

 tail 5| 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. S (V. 154 ; C. 48). • W. Ecuador. Mr. Eraser [CI- 



b. 5 (V. 154 ; 0. 48). Palltanga, Ecuador. Mr. Backley [0.]. 



3. Rhadinsea calligaster. 



Contia calligaster, Co2}e, Journ. Ac. Philad. viii. 1876, p. 146, 

 pi. xxviii. tig. 12. 



Snout narrowed ; one nasal shield ; loreal subquadrate ; one 

 prse- 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 ; 

 suboaudals 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 Eioa. 



4. Rhadinsea mimus. 



Opheomorphus mimus, Cojw, Proc. Ac. Philad. 1868, p. 807. 



Snout short; internasals broader than long; frontal shorter 

 than parietals ; loreal very small or absent ; one prse- and two 

 postoculars ; temporals 1 + 2 ; seven upper labials, third and fourth 

 entering the eye. Scales in 15 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. 



