REPTILES. 



17 



76. EUTAENIA MARCIANA, B. & G. 



Eutainia marciana, B. & G. Catal. N. Am. Serpents, Jan. 1853, 36. 



Sp. Ch. — Head triangular, short, but very broad posteriorly. Nose pointed; upper labials 8; 6th 

 largest; ?th nearly as large. Body rather stout, sub-cylindrical; tail short. Prominent color light 

 brown; a vertebral paler line and one lateral on each side on the second ;n>d third lateral rows more or 

 less indistinct. Three series of square black spots on each side, of about 56-60 in each series, from 

 occiput to anus. Sides of head black, with a crescentic patch of yellowish posterior to the labial plates 

 Three and sometimes four black vittoe radiating from the eye across the jaws. A double white spot with 

 a black margin on the suture of occipital plates. 



1417. Indianola. J. H. Clark.— 1418. Eagle Pass, Tex. A. Schott.— 1419. San Pedro, 

 Rio Grande, Tex. J. II. Clark. 



77. NERODIA WOODHOUSIl, B. & G. 



Nerodia woodhousii, B. & G. Catal. N. Am. Serp. Jan. 1853, 42. 



Sp. Ch. — Form of Nerodia erythrogast<r, but the head broader behind and more flattened above. 25 

 dorsal rows, all carinated. Three ratlin- lar#o post-orbit a Is; ante-orbitals narrow; loral large. Three 

 series of quadrangular dark blotches on a brownish clay colored ground. The middle series separated 

 by narrow white lines; the lateral by intervals of the ground color wider than themselves; the three 

 series perfect to the head. A double yellow occipital spot. A yellow spot between the superciliary and 

 vertical plate. A black line indistinctly seen from the posterior point of the eye to the ingle of the 

 mouth. Abdomen unspotted. — (Kennicott.) 



1308. Indianola, Tex. J. H. Clark. 



78. REGINA GRAHAMII, B. & G. 

 Plate VII, Fig. 2. Young. 



Regina grahamii, B. & G. Catal. N. Am. Serpents, Jan. 1853, 47. 



Sp. Ch. — Dull dark brown, with a dorsal light brown line, margined on each side by a narrow indis- 

 tinct black line. A broad yellowish stripe on the first, second, and third rows, margined above with an 

 indistinct black line on the fourth and fifth rows, and below by a distinct narrow black line on the lower 

 fourth of the first lateral row and the extreme ends of the abdominal scntellae. Abdomen yellowish, 

 tinged posteriorly in the old by olive, with a single central row of small sub-triangular black spots pos- 

 teriorly, which disappear on the anterior third of the body, and are sometimes indistinct in young speci- 

 mens. Dorsal rows of scales 19. — (Kennicott.) 



1376. Rio Salado, Tex. J. H. Clark, 



79. REGINA CLARKII, B. & G. 



Plate X. Adult. — Plate XI, Fig. 2. Young. 



Regina clarkii, B. & G. Catal. N. Am. Serp. Jan. 1863, 48. 

 Sp. Ch — Yellowish brown ibei , with four longitudinal bands of deeper brown. Abdomen dull yellow, 



with two clouded brown bands dotted with Mack. One ante-orbital. Dorsal rows of scales 19, all 

 carinated. 



1392. Indianola. J. H. Clark. — 1377. Indianola. Dr. Kennedy. 



80. HETERODON COGN 1TUR B. & G. 



Sp. Ch. 



Heterodon cognatwt, B. & G. Catal. N. Am. Se 

 Body shorter and stouter than in II. plat yr him 



longe 



than occipitalis. Dorsal rows of scales 23-25; outer smooth; next scarcely carinated. Seal 



3 r 



