6 SYNOPSES AND DESCRIPTIONS. 



belly larger, median dorsal row in contact with the rostral and separating 

 the oculars. 



Light greyish-brown, white beneath. 



Described from San Luis Potosi, Mex. 



Stenostoma myopicum spec. nov. 



Body long, slender, subcylindrical ; head indistinct, slightly depressed, 

 muzzle rounded; tail short, thick, abruptly rounded downward and from 

 the sides to the terminal spine. Mouth semilunar, inferior. Eyes dis- 

 tinctly visible. Rostral broad, reaching back on the head to a vertical 

 from the eye. Nasal in two parts, nostril between. Two labials between 

 nasal and ocular, anterior lower and beneath the nasal, posterior higher, 

 extending upward in a sharp angle in front of the eye. Ocular large, 

 rather narrow, separated from the medial row by a small plate. A large 

 labial behind the ocular. A pair of temporals, anterior resting on the 

 posterior labial and in contact with the ocular. Lower labials five, ante- 

 rior and posterior small. Scales smooth, glossy, rounded on the posterior 

 margin, in 14 rows, medial row of belly slightly larger, median dorsal in 

 contact with the rostral, separated from the oculars by a small scale. 

 Anal entire. 



Dark reddish-brown above, white tinged with purple beneath. Largest 

 specimen 8 inches; tail, .43 in. Hab. near Tampico, Mex. Dr. Edw. 

 Palmer. 



This species bears some resemblance to S. bicolor, Jan. It is distin- 

 guished by the height and shape of the anterior labials, and the narrow- 

 ness of the upper half of the nasals. 



Stenostoma phenops. 



Cope, 1S75, Jour. Ac. N. Sc., Phil, 128. 



"Scales in 13 rows. The eye is distinct, and the nareal suture extends 

 to the rostral plate. The lower surfaces are without marking, but the 

 scales of the upper surface are black, with pale borders. There are three 

 white spots: one on the end of the rostral plate, one at the apex, and one 

 on the under side of the tail. Total length, m .156; tail, .009. The same 

 species was obtained near Coban, Guatemala, by Henry Hague." Tehuan- 

 tepec. Known only from the description. 



