AMPHIBIANS AND REPTILES. 135 
bulge about opposite tympani, which is also greatest width of 
body. Constriction posteriorly rather evenly though slightly 
convex towards groin. Form rather slender with depressed 
appearance. Pelvic bones form an obtuse angle about posterior 
third in length of head and trunk, and processes rounded con- 
vexly, not elevated. Head large, broad, greatly depressed both 
above and below, though with edges of former surface more 
or less convex, and sides not especially abrupt. Snout short, 
broad, depressed above posteriorly, its length */, its width, 
and when viewed above end rather obtusely convex. Eye large, 
elongate, slightly elevated over upper profile, placed about mid- 
way between tip of snout, and shoulder, or about last 7% in 
Pickerel Frog. Rana palustris Le Conte. 
gape of mouth. Mouth large, and nearly straight, or horizontal. 
Lips fleshy and firm, upper a little better developed and closing 
all around or over lower. Lower lip firmer, with slight fleshy 
process at symphysis fitting in above. When viewed below mouth 
a little more obtuse in profile anteriorly than edge of snout, 
which protrudes well in front. Teeth in upper jaw uniserial, 
small, even, a little better developed anteriorly, and more or 
less concealed by lips. No mandibular teeth, edges of jaw hard 
and firm. Vomerine'teeth small, in 2 small posteriorly approx- 
internal nares. ‘Tongue large, fleshy, surface finely papillose, 
imated and rather closely situated patches midway between 
