48 
north American batrachia and reptilia. 
rows on the palate ; nostrils lateral in a single plate; supra-nasal 
shields narrow and numerous; ear small; body serpentiform, 
with two deep lateral furrows; limbs none. 
89. O. ventralis , Daud. Glass Snake. Markings some- 
what variable, but generally yellowish on back, frecpiently 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. Austroriparian 
region ; Kansas ; Illinois and Southern Wisconsin. 
Family IGF ANIDFE. 
Genus Sceloporus, 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 oblique 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. 
Korth America, except Sonoran and Lower Californian regions. 
91. S. fioridanus , 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 ANOLI DJE. 
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 body 
small and rounded; skin on throat loose and more or less infiata- 
