340 Illinois State Laboratory of Natural History. 



AORIS, DUM. ET BiBR. 



Dutn. et Hibr., Erp. G6n., 1841, VIII.. p. 506. 

 Hoffmann, Bronn's Thier- Reich, VI., Amphibien, 1873-78, p. 647. 

 Smith, (Jeol. .Surv. Ohio, IV., Zool. and Bot., Ft. I., Zool., 1882, 

 p. 705. 



Digits but slightly expanded at their tips. Toes with 

 large webs; basal part of fourth aud fifth toes bound together 

 by the integument; fingers free. No parotid. Tympanum 

 small and not distinct. Tongue short, cordiforra, excised, and 

 partly free behind. Teeth present on upper jaw and on vomer. 

 Skin smooth or slightly roughened. Sacral diapophyses not 

 widely expanded. Parieto-frontals embracing a fontanel. 

 Males with a subgular vocal sac. The genus is peculiar to 

 America. 



Acris gryllus, LeC. Cricket-frog, Peeper, Savannah 

 Cricket. 



Var. gryllus. 



Rana ynjlltis, LeC, Ann. Lye. Nat. Hist , N. Y., 1824, 1., p. 282.— 



Harlan, Jour. Acad. Nat. Sci. Phila., 1827, V., p. 340. 

 Arris yrylhis, LeC, Proc. Acad. Nat. Sci. Phila., 1854, VII., 



p. 426. 

 Acris gryllus, subsp. yryllits, Cope. Check List N. A. Batr. and 



Rept., 1875. 

 Acris gryllus gryllus, Yarrow, Check List N. A. Rept. and Batr., 



1882. 

 Ac?'is gryllus, subsp. gryllus, Davis and Rice. Bull. 111. State 



Lab. Nat. Hist, I., No. 5, 1883, p. 18; Bull. Chicago Acad, 



Sci., 1883. 



Var. crepitans. 



Acris <:rej)i.tuus, Baird, I'roc. Acad. Nat. Sci. Phila., 1854, VII., p. 

 59; LeC, 1. c, p. 42().— Baird, Mex. Bound. Surv., 185*.), Rep- 

 tiles, III., p. 28, pi. 37, fig. 14-17. 



Acris gryllus, subsp. cnju'luus, Cope, Check List, 1875. 



Acris gryllus rrcjtitii us, Yarrow, Check List, 18M2. 



Arris gryllus, subsp. cnpitftwi, Davis and Rice, Bull. 111. State 

 Lai). Nat. Hist., 1., No. 5. 1883, p. 18; Bull. Chicago Acad. 

 Sci., 1883. 



Acris gryllus, Dum. et Bibr., Erp. CU^n., 1841. VIII., p. 507.— 

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

 Sal. Ecaudata, p. 336. 



