NORTH AMERICAN BATRAOHIA AND REPTILIA. 
49 
ble: back with or without a crest; upper jaw rounded at end, 
even with the lower; rostral erect. 
92. A. principalis , Linn. Green Lizard; Floridan Cha- 
meleon. Head pyramidal, broad and flattened; tail rounded and 
tapering, covered with imbricate scales, which are larger than 
those of the body; length more than one and one-half times that 
of head and body ; color of head brown ; of body above, varying 
through all shades from bright pea-green to bronze- brown; a 
lighter dorsal stripe ; back and sides with fine brown zigzag lines ; 
body below ashy, greenish, or soft white; loose skin on throat 
with longitudinal brown lines; sometimes scarlet; no crest. 
Austroriparian region. 
Family GECCOJNTID^E. 
Genus Sph.erodactylus, Cuv. 
Scales of back equal, granular or rhombic; tail with a 
central series of shields; neither femoral nor preanal pores; eye- 
lids circular. Toes with a single series of transverse plates beneath; 
clawless, with a terminal compressed point; free, slender, sub- 
cylindrical at base, with a small, entire, circular terminal disk, 
convex beneath. 
93. B. notatus , Baird. Scales on back and sides large, 
strongly carinated, on belly smaller, smooth, hexagonal; above 
light brownish-yellow; dotted all over with reddish-brown, most 
distinctly on head and least on belly. Key West, Fla. (Cuba). 
Order TESTUDINATA. 
Synopsis of Families. 
A. Forearm and hand, and leg and foot, in the form of 
wings or paddles; not capable of distinct movements at wrist 
and ankle joints; digits flattened, elongated, and bound immov- 
ably together by the integument. 
a. Feet scaleless; the anterior pair very large; the pos- 
terior smaller but broad Sphargididce. 
b. Feet covered with scales Chelonidce. 
B. Limbs not in the form of paddles, capable of distinct 
movements at wrist and ankle joints. 
a. Shield leathery, incompletely ossified; feet with few 
scales; head long and pointed; body very flat. 
Tnonyckidw. 
