SYNOPSES AND DESCRIPTIONS. 5 



Labials two to three, rarely four, not in contact with the rostral. Anal 

 entire, larger than the adjacent scales. 



Tropical and semi-tropical regions. 

 *Scales in 14 longitudinal rows ; 



two labials, separated by the ocular; 



a small plate between the ocular and the medial row ; 



lower labials four dulce. 



no small plate between ocular and medial row; 



lower labials five tenuiculum. 



three labials, two in front of the ocular; 



a small plate between ocular and medial row 



myopicum. 

 Scales in 13 rows phenqps. 



Stenostoma dulce. 



Rena dulcis Baird & Girard, 1853, Cat. N. A. Serp., 142. 

 Stenostoma dulce Jan, 1861, Icon. Opldd., Livr. II, pi. V. 



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

 muzzle rounded; tail short, thick, ending in a spine. Mouth semilunar, 

 inferior. Eyes distinctly visible. Rostral reaching on the top of the 

 head nearly as far back as the eyes. Nasal obliquely divided in two 

 parts, nostril between, separated from the ocular by a single labial. Ocu- 

 lar large, separated from the medial series by a single plate. A large 

 labial behind the ocular. Lower labials four. Scales smooth, lustrous, in 

 14 rows, ventral rather smaller, median dorsal row in contact with the 

 rostral and separating the supraoculars. 



Reddish-brown above, reddish-white beneath. Hab. Texas. 



Stenostoma tenuiculum, sj). n. 



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

 rounded on the muzzle ; tail short, thick, ending in a point. Mouth semi- 

 lunar, inferior. Eye small, distinctly visible. Rostral reaching on the 

 head nearly as far back as the eyes. Nasal in two parts, nostril between, 

 separated from the ocular by a single labial. Ocular large, in contact with 

 the vertebral series (i. e., oculars separated by a single scale on the top of 

 the head). A large labial behind the ocular. Lower labials five. Scales 

 smooth, glossy, posterior margins rounded, in 14 rows, medial row of the 



*See Synopsis, p. 130. 



