SYSTEMATIC LIST AND SYNOXYMY. 13]. 



O P H I D I A— Continucxl. 



five. Scales in 14 rows; voiitrals little, if any, larger. Each scale haa 

 fonr angles, and its posterior margin is nearly a semicircle. Back 

 reddish brown ; belly reddish white. 



Resembles S. didce in coloration, bnt differs in the number of dorsal 

 rows of scales, complete separation of nasals by the rostral, five infra- 

 labials. Instead of four, and in having only the anterior parietal in 

 contact with the posterior labial. Total length 8 inches; tail 0.38. 



Uvalde, Texas. 



Ste.n'ostom.v tenx'iculum sp. n 



San Luis Potosi, Mexico. 



StENOSTOJIA MY0P1CU5I sp. n •. 



Tampico, Mexico. 



StBNOSTOMA I'IIEKOPS 



Cope, 1875, Jour. Phil. Ac., 128, — Checklist, 44. 



Tehuantepec; Guatimala. 



ONYCHOPIIIDIA. (Clawed Snakes.) 7 



ERYCIDAE. 



7 



Erycina Bonap., 1831, Saggio Pistrib. Met. An. Vert. Enjcidae Bnnap., 

 1840, Roy. Acad. Turin, Mem., II; Gthr., 1864, Rept. Brit. Ind., 332. 



Chakin,\ ' 



Gray, 1849, Cat. Snakes, 113; B. & G., 1853, Serp., 154. Wenona B. & 

 G., 1852, Pr. Phil. Ac, 176, — 1853, Serp., 139. Pseudoeryx Jan, 



1862, Arch. Natgesch., I, 242, — 18G5, Icon., Text, 67. Lkhanura 

 Cope, 1861, Pr. Phil. Ac, 304. 



Chakina bottae . ' 



Gray, 1849, Cat, 113; B. & G., 1853, Serp., 154. TortrU lotU:e Blainv., 

 1835, Nouv. Ann. Mus., 289, pi. 26, f. 1-16. Psnidoeryx bottae Jan, 



1863, Sist., 21, — Icon, livr., 3, pi. 2, f. 1, — 1S65, Icon., Text, 67. 



California to Mexico. 



Var. plumbea 



Wenona plumhca B. & G., 1852, Pr. Phil. Ac, 176, — 1853, Serp., 139; 

 Grd., 1858, Wilkes' Exp., Rept, 112, pi. 7, f. 1-7; Jan, 1863, Sist, 21, 

 — 1864, Icon., livr. 3, pi. 2, f. 2, — 1865, Icon., Text, 69. Wmma 

 isahella B. & G., 1852, Pr. Phil. Ac, 176, — 1853, Serp., 140; Grd., 

 1858, Wilkes' E.xp., Rept., 113, pi. 7, f. 8-14. amrina plumbea Cope, 

 1861, Pr. Phil., Ac, 305. Wawma Bd., 1859, P. R- E. Rep., X, pi. 32, 

 f. 3. 



Uniform brownish or leaden. Scales in 45 rows. Ventrals 206+37. 



California to Puget Sound. 



Q 



ClIARINA TRIVIRGATA 



Lkhanura trmrgata Cope, 1861, Pr. Phil. Ac, 304; Jan, 1865, Icon., 



Text, 70. L. roseofmca Oipe, 186'<, Pr. Phil. Ac, 2. L. myrwlepis 



Cope, 1868, Pr. Phil. Ac, 2. , . 



Lower California ; Mexico, 



