4:8 NORTH AMERICAN BATRACHIA AND REPTILIA. 



rows on the palate ; nostrils lateral in a single plate; supra-nasal 

 shields narrow and numerous; ear small; bodv serpen tiform, 

 with two deep lateral furrows; limbs none. 



89. O. ventralis^ Daud. Glass Snake. Markings some- 

 what variable, but generally yellowish on back, fi-equently with 

 spots of brown or greenish ; two narrow brown or black dorsal 

 lines; sides brown, with two narrow longitudinal greenish lines, 

 often spots of the same; below yellowish white. Austrorij)arian 

 region ; Kansas ; lUinois and Southern Wisconsin. 



Family IGUANIDyE. 



Genus 8cEL0P0Rus,Wiegman. 



Body depressed, covered with large, keeled scales; caudal 

 and dorsal the same, except that those of the back are arranged 

 in transversely diagonal series and those of tail in simple trans- 

 verse; back not crested; sides not serrate; head without spines, 

 the plates smooth, slightly convex; throat with a fold on each 

 side; nostril superior, subapical; ear with a dentate fringe of 

 scales in front; femoral pores distinct; toes simple. 



90. S. undulatus^ subsp. undulatus., Harl. Superciliaries 

 in four rows, the two outer and the inner small; scales of back 

 large, strongly carinate, about 35 oblicjue rows from head to base 

 of tail; scales on inside of tibia not carinate; color- variable; 

 above greenish or bluish with transverse undulating dark bands; 

 below yellowish, mottled with darker and usually a large blue 

 or greenish blotch on throat and sides ; length about seven inches. 

 I^orth America, except Sonoran and Lower Californian regions. 



91. S. Jioridanus, Baird. Superciliaries in three rows, the 

 inner and outer small, the middle large; scales of back large, 

 rough, about 33 oblique rows from head to base of tail; scales on 

 sides of tibia carinate; color above greenish-yellow, with two 

 broad yellow stripes, five scales apart, and with distinct blackish 

 transverse bars ; larger than S. undulatus. Florida. 



Family ANOLID^. 

 Genus Anolis, Merrem. 



Teeth on palatines; toes 5-5, long and slender; the penulti- 

 mate joint in all except the inner ones, which are rudimentary, 

 much expanded; hind limbs longer than the fore; scales of l^ocly 

 small and rounded; skin on throat loose and m^re or less inflata- 



