130 SYSTEMATIC LIST AND SYNONYMY. 



OPHIDI A— Continued. 



Stenostoma 



Wagler, 1824, Spix'Serp. Bras., 68; D. & B., 1844, Erp., VI, 322; Jan, 



1861, Arch, per la Zoill., 186. For Synopsis, page 5, read: 

 Scales in 15 rows ; 



ocular not in contact with the vertebral series; 



infralabials four dulce 



ocular in contact with vertebrals humik 



scales in 14 rows ; 

 two labials, separated by the ocular; 

 oculars not in contact with vertebrals; 



infralabials five rubellum 



oculars and vertebrals in contact; 



infralabials five tenuieulurn 



three labials, two in front of ocular; 

 oculars and vertebrals not in contact myopicum 



scales in 13 rows plienops 



Stenostoma dulce 



Rem dulcis B. & G., 1853, Serp., 142; Bd., 1859, P. B. R. Rep., X, pi. 33, 



f. 100. Stenostoma dulce Jan, 1861, Arch. Zool., 189, — Icon. livr. 2, 

 pi. 5, 6, f. 5, — 1863, Sist., 15, — 1864, Icon. Text, 36; Cope, 1880, 

 Bull. 20, U. S. Mus., p. 20, — 1875, Checklist, 44. 



Texas. 



Stenostoma humile 



Rena hurnilis B. & G., 1853, Serp., 143. Stenostoma humile Cope, 1861, 

 Pr. Phil. Ac, 305 (Name), — 1S75, Checklist, 44. 

 Body very slender and cylindrical; tail short, conical, tapering, not 

 acute, one-fifteenth of the total length. Head less depressed (than & 

 dulce). Eyes and nostril more distinct than in the preceding species 

 (S. dulce). The eye-shield in contact with the longitudinal series on 

 top of the head. No supraorbitals. Post parietals much smaller than 

 the parietals. Scales in 15 rows. Scales on the ahdomen larger than 

 on the back. Uniform chestnut-brown, lighter beneath. 



Valliecetas, Cal. (B. & G.) 



Stenostoma rubellum sp. n 



Long, slender, cylindrical ; head indistinct, slightly depressed, muzzle 

 rounded ; tail short, thick, ending in a spine which is directed down- 

 ward. Eyes distinctly visible beneath the ocular shields. Bostral 

 reaching backward as far as to a vertical from the anterior edge of 

 the ocular. Nasal obliquely divided; lower portion narrow, separated 

 from the ocular by a single labial. Oculars reaching the edge of the 

 ; lip, broadening upward, separated by three small shields on the top of 



the head, followed by a large labial. A pair of large broad parietals 

 on each side behind the upper half of the ocular and the small supra- 

 ocular, separated on the vertex by the vertebral series, and the posterior 

 of each pair separated from the labial by a scale-like shield. Nasals 

 separated by the extremity of the rostral and the anterior scale of the 

 dorsal row. Rostral broad, upper extremity rather acute. Infralabials 



