328 Illinois State Lahonitovij of Natural History. 



golden. Anterior legs with a dark dash at their bases, and with 

 a few dark spots elsewhere ou the limbs, sometimes almost en- 

 tirely black posteriorly. Posterior legs obscurely banded and 

 spotted with black ; posterior surface of thighs mottled ; webs 

 dusky. White below, with the lower lip dark-spotted, and in 

 young specimens with the throat, flanks, and ventral surface 

 of the femora mottled with dusky. 



Length of body, 2.87 ; from tip of snout to axilla, 1.37 ; 

 femur, 1.19 ; tibia, 1.25 ; tarsus and fourth toe together, 2. 

 These measurements are from a small example. 



The species occurs in all parts of the State. Ottawa, 

 Champaign, Union Co. 



This is a large species more closely resembling the bull 

 frog than any other. The glandular folds of the sides, the 

 length of the first finger as compared with the second, and the 

 incurved margins of the webs between the toes will always en- 

 able one to separate the two species. The spring frog is very 

 rarely found at any great distance from water. In the latter 

 part of summer it may often be found on the banks of small 

 woodland streams, but owing to its habit of diving headlong 

 into the water when approached it is not easy to secure. Its 

 flesh is frequently eaten. 



Rana catesbiana, Shaw. Bull Fkog. 



Rana catesbiana, Shaw, Gen. Zool. 1800-19, II f., p. 106, pi. 33. 

 Rana tmigiens, Dum. et 13ibr., Erp. Gen., 1842, VIII., p. 370. 

 Rana pipiens, Holbr., N. A. Herp., 1842, IV., p. 77, pi. 18. — 



De Kay, Nat. Hibt. N. Y., I., Zool. III., Rept. and Amph., 



1842, p. 60, pi. 19, fis. 48. 

 Rami cateshiaiia, Cope, Check List N. A. Batr. and Kept., 1875. 



— Boulenger, Cat. Batr. Sal. in Coll. Brit. Mus„ 2d ed.. 1882, 



Sal. Ecaudata, p 36.— Davis and Rice, Bull. 111. State Lab. 



Nat. Hist., I., No. 5, 1883, p. 25; Hall. Chicago Acad. Sci., 1883. 



Body six inches, or more, long; stout. No glandular folds. 

 Males without saccular dilations of the skin behind the corners 

 of the mouth. Skin faintly, tuberculate above, distinctly 

 tuberculate on the sides; granulate in the region of the vent 

 and on the posterior surface of the femora. Head very large 

 and wide, obtusely pointed. Margin of lower jaw notched 

 on each side of the symphysis. Tongue obcordate, with two 



