658 13. COLUBRIDA 
flat opposite Ramsey Canyon, Huachuca Mountains, Cochise 
County. 
The National Museum has a specimen labeled “Son- 
ora.” 
Genus 28. Coluber 
Coluber Linnzus, Syst. Nat., Ed. 10, Vol. I, 1785, p. 216 (type, 
constrictor). 
Bascanion Bairv & Grrarp, Cat. N. Amer. Rept., Pt. I, Serpents, 1853, 
p- 93 (type, constrictor). 
Masticophis Bairp & Girarp, Cat. N. Amer. Rept., Pt. I, Serpents, 1853, 
p- 98 (type, orvatus). 
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 Californian. 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 185; urosteges not more 
than 102. 
Coluber constrictor mormon.—p. 660. 
