64 PROCEEDINGS OF THE ACADEMY OF [Jan., 



toward the tail; on each side a bi'own or olive stripe about the 

 same width, bordered below Ijy a greenish olive or brown stripe 

 extending to the veutrals; the stripes are sometimes indistinct and 

 at others are broken into spots; belly yellowish; head brown, 

 usually unmarked. 



Ilab. — Western Texas to Utah and Arizona; Sonora and Lower 

 California. 



Several other species of Salvadora are found in Mexico. 



PHYLLORHYNCHUS Stej. 



Proc. U. S. Nat. Mus., 1890, 151 ; Cope, I. c, 617, and Rep. Nat. Mus., 

 831 ; Lytorhynchm (part) Boul., I c, I, 414. 



Max'llary teeth smooth, longer behind, an interspace; rostral 

 l)roniinent with pi'ojectiug lateral edges, and separating the inter- 

 nasals; two to four loreals; three preoculars; small scales between 

 the eye and the labials; two nasals; two iuteruasals; pupil verti- 

 cal; one pair of chin shields; scales smooth or partly keeled, with- 

 out pits, in 19 rows; anal entire; size medium; head slightly 

 distinct. 



Hab. — North America and INIexico. 



Phyllorhynclius browni Stej. 



I. c, 152; Cope, I. c, 618, and Rep. Nat. Mus., 821; Lytorhynchus 

 browni Boul., I. c, I, 417. 



Body slender; rostral very large, projecting, with free edges and 

 completely sej^arating the internasals; a transversely enlarged 

 shield behind the parietals; loreals 3, the upper and lower small; 

 oculars 3-4; several suboculars separating the eye from the labials; 

 upper labials 6; temporals 3; one pair of chin shields; scales in 

 19 rows, nearly smooth anteriorly, keeled behind; ventrals 159; 

 subcaudals 31. 



Length 325 mm. (tail 42). 



Whitish, with 15 brown blotches, mostly subquadrangular and 

 lighter in the centre; belly white; a dark l)ar across the head 

 between the eyes. 



Hab. — Only two specimens known, from Tucson, Arizona. 



Phyllorhynclius decurtatus Cope. 



Phimothyra dccurtata Cope, Proc. Acad. Phila., 1868, 310 ; Phyllo- 

 rhyiichiis decurtatus Stej., Proc. U. S. Nat. Mus., 1890, 154, and 

 Cope, Rep. Nat. Mus., 823 ; Lytorhynchus decurtatus Boul., I. c, 

 I, 417. 



Much like P. browni, but the scales are smooth; there is no 



