1901.] NATURAL SCIENCES OF FHILADELnilA. 51 



Length about 1450 mm. (tail 230). C vulpimis is relatively 

 stouter, and has a shorter tail than the other American species of 

 Coliibei'. 



Hab. — Illinois to Minnesota; south to Nebraska. 



A snake belonging to this genus, collected at Fort Davis, Texas, 

 having 9 upper labials; 27 rows of scales, of which six are slightly 

 keeled; warm grayish ash color, with a series of narrow brown 

 dorsal spots, eighty in number, and the lateral series indistinct, was 

 described by Dr. Yarrow under the name of Coluber baircU in 

 Cope, Bullet in U. S. Nat. Mus., No. 17, p. 41 (1880). The speci- 

 men remains unique and its relations are consequently doubtful. 



RHINECHIS Michahelles. 



Wagl., loon. Amph., PI. 25 (1833); Cope, I. c, 637, and Eep. Nat. 

 Miis., 862 ; Coluber (part) BouL, I. c, II, 24. 



Maxillary teeth smooth, equal; one loreal; one preocular; two 

 internasals; two nasals; rostral entering between the interuasals 

 and projecting anteriorly; scales smooth, with two pits, in 27-ol 

 rows; anal entire; size moderate; head small and slightly distinct. 



Hab. — Southwestern United States and Mexico. 



Rhinechis elegans Kenn. 



Arizona elegtois Kenn., U. S. and Mex. Bound. Surv. Kept., 18, PI. 

 XIII (1859); Van Den., I. c, 193 ; Wdnechis elerjans Cope, I. c, 638, 

 and Rep. Nat. jNIus., 863 ; Coluber arizonce BouL, I. c, II, 66. 



Body not very stout; head slightly distinct; snout projecting; 

 rostral extending posteriorly between the internasals; two nasals; 

 oculars 1 (2)-2; loreal long and narrow; temporals 2-3 (4); 

 upper labials 8; scales iu 27-31 rows; ventrals 207-227; sub- 

 caudals 45-59. 



Brownish or reddish yellow above; a dorsal series of transvei'se 

 brown spots, eight or nine scrfles wide, edged with darker brown, 

 and two alternating series on each side, the upper one subcircular, 

 the lower indistinct and on the three outer scale rows; belly white 

 or yellowish without markings : a dark oblique streak behind the 

 eye and indistinct bands or spots on the head; a few small .spots 

 on the anterior labials. The largest of two specimens from Pecos, 

 Tex., now living in the Zoological Society's collection, measures 

 1100 mm. (tail 150). The dorsal interspaces are pink. 



Hab. — Texas to southern California and northern Mexico. 



