13. COLUBRIDJE 



flat opposite Ramsey Canyon, Huachuca Mountains, Cochise 

 County. 



The National Museum has a specimen labeled "Son- 

 ora." 



Genus 28. Coluber 



Coluber Linn^us, Syst. Nat., Ed. 10, Vol. I, 1785, p. 216 (type, 



constrictor) . 

 Bascanion Baird & Girard, Cat. N. Amer. Rept., Pt. I, Serpents, 1853, 



p. 93 (type, constrictor). 

 Masticofhis Baird & Girard, Cat. N. Amer. Rept., Pt. I, Serpents, 1853, 



p. 98 (type, orrutus). 



The body is very long and slender, with long whip-like 

 tail. The head is distinct from the neck, large, long, with 

 flattened top and rounded snout. Its plates are normal. 

 The nasal plates are not united. There are two (rarely one) 

 preoculars and two postoculars. Temporals are normally 

 2+2. A loreal is present. The scales are smooth, in 15, 

 17 or 19 rows, usually with two (0-3) apical pits. The 

 anal plate normally is divided (rarely undivided in C. flag- 

 ellum flagellum and its western subspecies). Urosteges are 

 in two series. The eye is very large, with round pupil. 



Four species are known to be Califomian. Young of 

 the first two are blotched, of the others, striped. Three of 

 these species range into other western states and the fourth 

 into Lower California. A fifth species lives in the Cape 

 Region of Lower California, a sixth occurs from south- 

 eastern Arizona south into Mexico, and a seventh is confined 

 to Clarion Island. 



Synopsis of Species 

 a. — Scales in seventeen rows, 

 b. — No distinct longitudinal light lines in adults, 

 c. — Gastrosteges fewer than ISJj urosteges not more 

 than 102. 



Coluber constrictor mormon. — p. 660. 



