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 (Cnemidophorus} . 



Genus 30. Phyllorhynchus 



PAyllorAyncAus STEJNEGER, Proc. U. S. Nat. Mus., Vol. XIII, 1890, 

 p. 1 5 1 (type, brou-ni) ; 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 



