RANIDA. — CIX. 185 
6. Tympanum smaller than eye. 
c. Back with large distinct dark spots, more or less regularly arranged ; 
vomerine teeth between the inner nares. 
523. R. areolata Baird. The Northern form is var. circulosa 
Rice & Davis, thus described: Brownish black, divided by narrow 
clay-colored lines into irregular circular blotches, largest behind; 
arms and legs barred or blotched; head broad depressed ; snout 
very obtuse; skin coarsely punctate; a deep hollow between nostril 
and eye; region above and behind ear swollen; glandular folds 
large; toes narrowly webbed. L. 34; leg, 54. N. Ind. and Ill. 
The typical areolata, from Texas, has spots smaller, bordered with 
white. (Lat., with little areas or spots.) 
524. R. virescens Kalm. Common Froc. LrEoparp FROG. 
Green, usually bright, with irregular black blotches edged with 
whitish, these mostly in two irregular rows on back; usually two 
spots between eyes; legs barred above; belly pale; glandular folds 
large; head rather elongate. L. 23. N.Am., W. to Sierra Ne- 
vada, very common. (K. halecina “ Kalm.”) (Lat., greenish.) 
525. R. palustris Le Conte. PickrrEeL Froc. Light brown, 
with two rows of large oblong square blotches of dark brown on 
back; one or two on sides; a brown spot above eye; a dark line 
from nostril to eye; upper jaw white, spotted with black; head 
short, obtuse; toes well webbed; glandular folds low. L. 23. E. 
U. S., in mountains, ete. (Lat., in swamps.) 
cc. Back with small dark spots or none. 
d. Side of head without distinct dark band; vomerine teeth between the 
inner nares. 
526. R. septentrionalis Baird. Brown or olive with paler 
vermiculations; sometimes a few dark blotches behind; pale below; 
femur and tibia equal, 4 length of body. L.2}. Canada to Mon- 
tana. (Lat., northern.) 
dd. Side of head with a dark brown band, wider behind, from snout to 
near shoulder, bordered below by a yellowish white line; usually 
a black spot at base of arm; vomerine teeth extending beyond level 
of hinder edge of inner nostril. 
527. R. sylvatica Le Conte. Woon-Frog. Pale reddish-brown ; 
arms and legs barred above; head small, pointed; femur and tibia 
about equal, the latter considerably more than half body; a rounded 
outer metatarsal tubercle present. L. 13. E. U. S., W. to the 
plains; common in damp woods; an almost silent frog. 
528. R. cantabrigensis Baird. Very similar to preceding, but 
the tibia half length of body; a narrow pale line along thighs be- 
hind; a dorsal line from snout to arms; back sometimes with dark 
spots ; no outer metatarsal tubercle. Mass., to Alaska and N. 
(Lat., of Cambridge. ) 
