130 



SYSTEMATIC LLST AND SYNONYMY. 



OPHIDIA- 



-Continued, 



Stenostoma 



AVaglei-, 1824, Spix Serp. Bras,, GS; D. & B., 1844, Ei-p., VI, 322; Jan, 



1861, Arch, per la Zoiil., 186. For SynopsLs, page 5, read; 

 Scales in 15 rows; 



ocular not in contact with tlie vertebral series; 



infralabials four duke 



ocular in contact witli vertcbrals humik 



scales in 14 rows; 



two labials, separated by the ocular; 

 oculars not in contact with vertcbrals; 



infralabial.s five rubdlum 



ocular.s and vertcbrals in contact; 



infralabials five ienuiculum 



three labials, two in front of ocular; 

 oculars and vertehrals not in contact 

 scales in 13 rows 



myopiaim 



jjlimops 



Stenostoma dulcb 



Rem dakis B. & G., 1853, Serp., 142; Bd., 18.50, P. R. U. Rep., X, pi. 33, 

 f. 100. Sterwshina duke Jan, 1861, Arch. Zool., 189, — Icon. livr. 2, 

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

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



Texas. 



Stenostoma udmile. . 



Rena humilk B. & G., 1853, Serp., 143. Skno-itoma liumilr Cope, 1861, 

 Pr. Phil. Ac, 305 (Name), — 1875, Checklist, 44. 

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

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

 duke). Eyes and nostril more distinci, than in the preceding species 

 (S. duke). The eye-shield in contact with the longitudinal scries on 

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

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

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



Valliecetas, Cal. (B. & G.) 



Stenostoma ruhelli'.m sp. n 



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

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

 ward. Eyes distinctly visible beneath the ocidar shields. Rostral 

 reaching baekwanl 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 lidiial. Ocidiirs reaching- the edge of the 

 lip, broadening ujiward, separated by three .small shields on the top of 

 the lieail, followed by a large labial. A pair of large broad jiarietals 

 on e.ach side bebiiid the up]ier li:df of the ocular :inil Ihe small supra- 

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

 of oac^h pair separated from the labial by a scale-like shield. Nasals 

 separated by the extremily of the rostral and the anterior scale of Ihe 

 dorsal row. Rostral broad, ujiper exlreuuty rather acute. Infralabials 



