NORTH AMERICAN BATRACHIA AND REPTILIA. 
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and tibia about equal, and one-half length of body; L. three 
inches. Eastern United States. 
72. R. catesbiana , Schaw. Bull Frog. Above greenish of 
varying shades, marked with numerous small dark spots; head 
usually bright, pale green ; extremities blotched ; posterior 
surface of thighs mottled with blackish ; below yellowish-white, 
often clouded with dusky; cutaneous folds none or incon- 
spicuous; head very large, as broad as long; tympanum large; 
interval between patches of palatine teeth comparatively large; 
toes broadly webbed to the base of last joint; femur about 
equal to tibia, and less than one-half total length ; L. live inches. 
Eastern United States. 
73. R. temporaria , subsp. sylvatica , LeConte. Wood 
Frog. Above pale reddish-brown; a dark brown vitta, narrow 
before and broad behind, from snout to near shoulder, bordered 
below by a yellowish white line; a black spot usually at base of 
arms; flanks mottled in front; extremities with transverse dark 
bars above ; below white, sometimes mottled on anterior surface ; 
head small, pointed; tympanum small; a narrow cutaneous fold 
on each side of back; femur and tibia about equal, the latter 
considerably more than one-half total length; L. one and three- 
eighths inches. Eastern region. 
74. R. temporaria , subsp. cantabrigensis , Bd. General 
appearance and size of preceding; light colored lateral folds 
and a dorsal line from snout to arms; sometimes dark spots 
above; a narrow light line along posterior face of thighs; tibia 
about one-half length of body. Canada to Rocky Mountains. 
