. The reptiles of western North America, an account of the species known to inhabit California and Oregon, Washington, Idaho, Utah, Nevada, Arizona, British Columbia, Sonora and Lower California. 32. ARIZONA 703 top of head, a pair of internasals, a pair of prefrontals, afrontal, supraocular of each side, and a pair of large parie-tals. Anterior and posterior nasals usually distinct, butsometimes united above nostril. Loreal elongate. One ortwo preoculars and two or one postoculars. Temporalsnormally two followed by three, sometimes 2+4 or 2+5,lower scale of first row often elongate. Eight, or
. The reptiles of western North America, an account of the species known to inhabit California and Oregon, Washington, Idaho, Utah, Nevada, Arizona, British Columbia, Sonora and Lower California. 32. ARIZONA 703 top of head, a pair of internasals, a pair of prefrontals, afrontal, supraocular of each side, and a pair of large parie-tals. Anterior and posterior nasals usually distinct, butsometimes united above nostril. Loreal elongate. One ortwo preoculars and two or one postoculars. Temporalsnormally two followed by three, sometimes 2+4 or 2+5,lower scale of first row often elongate. Eight, or rarelyseven or nine, superior and 11 to 15, usually 13, inferiorlabials, sixth or seventh superior and seventh or eighth in-ferior usually largest, fourth and fifth superior normallyreaching eye, first pair of inferior meeting on median pairs of genials, posterior narrower and shorter or butlittle longer than anterior. Scales on body smooth, thin,in 27 to 31 rows. Anal plate not divided. Gastrostegesvarying in number from 209 to 227. Urosteges in twoseries of from 45 to 59. The ground color is pale brown or yellowish gray,lighter near the middle of the back, along which is a ser
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Keywords: ., bookcentury1900, bookdecade1920, booksubject, booksubjectserpents
