322 Illinois State Lahoratori/ of Natural History. 



below, black anteriorly and posteriorly. Tympanum brown, 

 with a pale center. Glandular folds yellow. Femora gam- 

 boge-yellow ventrally, and, in a female, with a wash of the same 

 color along the flanks. The largest of these specimens meas- 

 ures 2.37 inches in length. 



Rana pipiens, Schreber. Leopard Frog, Shad Frog. 



Rana pipiens, Schreber, Der Natiirforscher, 1782, p. 182 (S. Gar- 

 man). 



liana pip iem, Gmel., Syst. Nat, ed 1.3, 1788, III., p. 1052. 



Bana halecina, Dum. et Bibr., Erp. Gen., 1841, VIII., p. 352.— 

 Holbr., N. A. Herp., 1842, IV., p. 91, pi. 22.— DeKay, Nat. 

 Hist. N.Y., L, Zool. III., 1842, Kept, and Amph., p. (53, pi. 20, 

 fig. 49.— Kenn., Trans. 111. State Agr. Soc, 1853-54, 1., p. 593. 



Rana pipiens, LeC, Proe. Acad. Nat. Sci. Phila., 1855, VIII., 

 p. 424. 



Rana halecina, Boulenger, Cat. Batr. Sal. in Coll. Brit. Mus., 2d 

 ed., 1882, Sal. Ecaudata, p. 41.— Davis and Rice, Bull. 111. 

 State Lab. Nat. Hist., I., No. 5, 1883, p. 24; Bull. Chicago 

 Acad. Sci., 1883. 



Rana pipiens, S. Garman, Bull. Essex Inst., XX., 1888, p. 95. 



Body about three inches long ; slender. Males with no 

 saccular dilations of the skin at the corners of the mouth. 

 Skin smooth above and below, excepting that of the ventral 

 posterior surfaces of the femora, which is granulate. Head 

 obtusely pointed, sides scarcely arcuate. Margin of lower lip 

 notched on each side of the symphysis, leaving a median knob. 

 Tongue obcordate, with two small posterior lobes ; free for 

 half its length behind, and also extensively free at the sides. 

 Nostril about midway between the tip of the snout and the an- 

 terior border of the eye. Eye large. Tympanum circular in 

 outline; about two thirds the longitudinal diameter of the eye. 

 A well-developed glandular fold extends along each side from 

 the posterior upper margin of the eye nearly to the posterior 

 extremity of the body, terminating above the femora. Two 

 other folds, one for each side, extend along the upper lip 

 obliquely downward and backward between the tympanum and 

 the angle of the mouth, and terminate above the axilla. Mar- 

 gins of the webs deeply incurved between the toes, not extend- 

 ing beyond the base of the penultimate phalanx of the fourth 



