92 SYNOPSES AND DESCRIPTIONS. 



,,. CONTIA ISOZONA. 



Cope, 1866, Proa. Ac. N. Sc., Phil, 304. 



Tail four and two fifths times in the total length. Eye small, diameter 

 twice in length of muzzle. Orbitals 1 — 2. Rostral rounded, slightly pro- 

 duced backward. Prefrontals and internasals much broader than long. 

 Loreal twice as long as high. Labials seven, all higher than long. Eye 

 over third and fourth. Scales in 15 rows, all broader than long. Ventrals 

 158 — 167. Anal divided. Subcaudals 52 jmirs. 



Twenty black half rings, separated by equal spaces of pinkish ground 

 color. Belly immaculate. Tail completely six-annulate. The second 

 specimen was vermillion between the bars and on top of the head. Prob- 

 ably a variety of C. semiannulata, (From descr.) Utah. 



(Procinura.) 



CONTIA AEMULA. 

 Procinura aemula Cope, 1879, Pr. Ac. N. Sc, Phil, 262. 



Post maxillary teeth longer, smooth, not isolated. Subcylindrical (ela- 

 pomorph); head flattened on crown, muzzle projecting, rounded; tail short, 

 near one sixth of total, covered with roughly keeled scales. Head-shields 

 nine. Rostral obtuse-angled on top of snout. Prefrontals wider than 

 long. Frontal wide, sending a long angle backward. Parietals short, 

 wide. Nasal in two parts, nostril between. Loreal quadrangular. Or- 

 bitals 1 — 2. Temporals 1 + 2. Labials seven, first longer than high, 

 third and fourth in orbit. Infralabials eight, fourth largest. Submentals 

 two pairs, posterior small. Scales broad, rounded, in 15 rows, outer 

 broader, smooth on anterior portion of body, medial rows keeled a short 

 distance in front of the vent, caudals all keeled. Ventrals 148. Sub- 

 caudals 41 pairs. 



Colors similar to those of Elwps fulvius. Broad black rings surround the 

 body ; these are broadly bordered with yellow, and separated by red twice 

 as wide as the yellow. Red scales with black centers. A black spot on 

 the crown covers frontal, supraciliaries, and parietals. Total length m , 

 364; tail m , 061. (From descr.) Mexico. 



(Contia.) 



