92 SYNOPSES AND DESCRIPTIONS. 
CONTIA ISOZONA. 
Cope, 1866, Proc. Ae. 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 pairs. 
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. seméannulata. (From deser.) Utah. 
(Procinura.) 
CoNTIA AEMULA. 
PROCINURA AEMULA Cope, 1879, Pr. Ac. N. Se., Phil., 262. 
Post maxillary teeth longer, smooth, not isolated. Subeylindrieal (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- 
eaudals 41 pairs. 
Colors similar to those of Elaps fulvius. Broad black rings surround the 
body; these are broadly bordered with yellow, and separated by red twice 
as wide as the yellow. Red seales with black centers. A black spot on 
the crown covers frontal, supraciliaries, and parietals. Total length 0°, 
364; tail 0", O61. (I*rom deser.) Mexico, 
(Contia.) 
