1901.] NATURAL SCIEXCES OF I'HILADELPHIA. 87 



with black. A second specimen is very similar in color, but the 

 bla<;k on the ends of the veutrals often runs up on the scales to 

 about the fourth row. 



According to Mr. Van Denburg, the spots on the back, which 

 ordinarily are red, are at times white, but I have never myself 

 seen such a specimen. 



Hab. — Southwestern Kansas and western Texas to California. 



HYPSIGLENA Cope. 



Proc. Acad. Pliila., 18G0, 24G ; I. c, 617, and Rep. Nat. Mus., 953; 

 Boul., I. c, II, 208, 



Postei-ior maxillary teeth strongly enlarged, smooth, diacrau- 

 terian; one loreal; two iuternasals; two nasals; vertical, elliptical 

 pupil; scales smooth, with pits, in 19-21 rows; anal divided; size 

 medium to small ; head distinct. 



Hab. — ^N'orth and Central America. 

 Hypsiglena ochrorhynclia Cope. 



Proc. Acad. Pliila. , 1860, p. 246 ; I. c, 617, and Rep. Nat. Mus., 953 ; 

 Boul., I. c, II, 209 ; II. chlorop7i(eu, II. ochrorhyncha and E. 

 texana Stej., No. Am. Fauna, No. 7, 205. 



Size small; body round; head distinct; head plates normal; 2 

 nasals; 1 loreal; 1 large preocular, with usually a small one below 

 it; post-oculars 2; labials 8; temporals 1-2; scales in 21 rows; 

 ventrals 168-187; subcaudals 40-55. 



Length 320 mm. (tail 60). 



Gray or yellowish, with a dorsal series of dark-brown blotches 

 and two alternating series on each side; a dark stripe through 

 each eye, running back to the nape, and a median one between 

 them; upper surface of head and labials faintly dotted with 

 brown; belly white. 



The convexity of the head attributed to H. texana Stejn. 

 appears to me abnormal, and the difference in the lateral head 

 stripe is trivial. 



Hab. — Texas to southei'n California; northern Mexico. 



RHADINEA Cope. 



Proc. Acad. Phila., 1863, 100, and Dromicus, I. c, 618; Liophis 

 (part) and Rhadinea Boul., I. c. II, 127 and 160 ; Rhadinca Cope, 

 Rep. Nat. Mus., 754. 



Posterior maxillary teeth slightly lengthened, smooth, sometimes 



a slight interspace ; one loreal; one preocular; two internasals; two 



