692 13. COLUBRIDJE 



(Panamint Mountains, Maturango Spring and Shepherd 

 Canyon in the Argus Range, Amargosa Borax Works), Los 

 Angeles (Arroyo Seco near Pasadena, San Gabriel Moun- 

 tains, Sierra Madre), San Bernardino (Ontario, Lytle 

 Creek, and near San Bernardino), Riverside (San Jacinto, 

 San Jacinto Mountains, Riverside, Banning at 2200 feet. 

 Riverside Mountain Colorado River) ; San Diego (Valle de 

 las Viejas) and Imperial (10 miles east from Holtville, 

 Cane Spring), counties. 



Habits. — Almost nothing is known of the habits of this 

 snake. They probably resemble those of the racers. One 

 was found partly buried in sand. Grinnell and Grinnell 

 note: 



In August one was found climbing with agility through 

 wild lilac bushes; when pursued it took refuge in a scrub 

 oak where it poised rigid along a branch and among some 

 adjacent leaves. 



Dr. Coues mentions one, secured at Fort Whipple, 

 which had eaten a whip-tailed lizard {Cnemidofhorus) . 



Genus 30. Phyllorhynchus 



Phyllorhynchus Stejneger, Proc. U. S. Nat. Mus., Vol. XIII, 1890, 

 p. 1 5 1 (type, brouni) ; Cope, Report U. S. Nat. Mus., for 1 898, 

 1900, p. 821. 



Lytorhynchus Boulenger, Cat. Snakes Brit. Mus, Vol. I, 1893, p. 414 

 (part). 



The body is rather small, with short tail. The head is 

 a little broader than the neck. The rostral plate is very 

 much enlarged, has free lateral borders, and is produced 

 backward on the upper surface to the prefrontals, com- 

 pletely separating the internasals. The nasal plates are dis- 

 tinct. Loreals are present. The supralabials are separated 

 from the eye by suboculars. The scales are keeled or smooth, 

 without pits. The anal plate is divided. Urosteges are in 



