80 SYNOPSES AND DESCRIPTIONS. 



Hypsiglena OCHRORHYNCHA. 



Cofie, 1800, Pr. Ac. N. Sc., Phil, 246, 



Elongate, subcylindrical, tajiering little; head distinct from the neck, 

 short, subconical, crown flattened, snout prominent; tail short, near one 

 sixth of the total, tapering. Eyes small, pupil vertical. Post maxillary 

 teeth longer, smooth, isolated. Nasal in two parts, nostril between. A 

 loreal. Oculars 2 — 2. Tempoi'als 14-24-3. Labials eight, fourth and 

 fifth in orbit, sixth and seventh largest. Infralabials nine or ten, fifth or 

 sixth largest. Submentals two pairs, posterior smaller. Scales smooth, in 

 21 rows, outer as broad as long. Ventrals 167. Anal bifid. Subcaudals 

 48 pairs. 



Scales of body and head minutely punctulate with brown, giving a light 

 brown or greyish appearance. With four series of alternating brown spots 

 on each side, about 33 to vent. The two dorsal rows are the larger, and 

 alternate or unite. The spots decrease in size down the flank ; the lower 

 are obsolescent. Belly light, immaculate. Head light; a brown band 

 from the eye above the angle of the mouth to the neck, spreading poste- 

 riorly. Cape St. Lucas ; Arizona. 



