334 illinois State Lahoratorij of Natural History. 



cylindrical or depressed; toes palmate or semipalmate. Skin 

 warty or smooth (subgenus Calophrynus). Two metatarsal 

 tubercles, one of which is very large and is situated at the base 

 of the first toe. Tongue elongate, oval, free for a part of its 

 length behind and at the lateral margins. Males generally 

 with an internal subgular vocal sac. Pupil of eye elliptical 

 and dilatable. Eustachian tube large. 



Of the ninety-six species belongiug to this genus, fifty- 

 seven occur in the zoological region of which South America 

 forms the greater part; seven occur in the North American 

 region ; and the remainder are distributed, some to each of the 

 remaining regions of the globe. 



Bufo lentiginosus, Shaw. The American Toad. 



Var. lentiginosus. 



Rana lentiginosa, Shaw, General Zo(>l., III., Amph., 1802, p. 173, 



pi. 53. 

 Bufo musicu!^, Diim et Bibr., Erp. Gen. VIII , 1841, p. 089. 

 TduKttohiu.fi tenticjuiosus\LeC., Proc. Acad. Nat. Sei. Phila., 1854, 



VII., p. 426. 

 Bufo hntiijinosus, subsp. lentiginosus, Cope, Check List X. A. 



Batp. and Rept., 1875. — D.-ivis and Rice, Bull. 111. State Lab. 



Nat. Hist., I., No. 5, 1883, p. 17 : Bull. Chicago Acad. Sci., 1883. 



Var. americanus. 



Bufo amey«m////,v, LeC, MS. (LeConte never printed a descrip- 

 tion of this varietj). — Holbr., N. A. Ilerp., 1st ed., 1834, I., 

 p. 75, pi. 9.— Baird.U. S. Mex. Bound. Surv., 1859, Reptiles, 

 p. 25, pi. 39, fiff. 1-4. 



Bufo lentiijinosus, sabsp. americanus. Cope, Check last N. A. 

 Batr. and Rept., 1875. — Davis and Rice, Bull. 111. State Lab. 

 Nat. Hist., I., No. 5,1883, p. 17; Bull. Chicago Acad. Sci., 1883. 



Var. lentiginosus and americanus. 



Bufo lentbffinosus, Boulenger. Cat. Batr. Sal. in Cull. Brit. Mas.- 

 2d ed., 1882, Sal. Ecaudata, p. 308. 



Body very stout, depressed. Skin tuberculate above, gran- 

 ulate below. Head, not tuberculate excei)t about the eyes, 

 widely channeled longitudinally, with two ridges bounding the 

 channel at the sides. Upper jaw incised at the symphysis; lower 

 jaw incised on each side of the symphysis, leaving a symphy- 



