350 Illinois State Laboratory of Natural History. 



Hyla versicolor, LeC. Common Tree-toad. 



Hyla versicolor, Ann. Lye. Nat. Hist. N. Y., 1825, I., p. 281.— 

 Harlan, Jour. Acad. Nat. Sci. Fhila., 1826, V., p. 343.— Dum. et 

 Bibr., Erp. Gen. 1841, VIII., p. 566.— De Kay, Njit Hist. N. Y., 

 I.. Zool. III., 1842, Kept, and Araph.,p. 71. pi. XXL, fig. 53.— 

 Jlolbr., N. A. Herp., 1842, IV., p. 115, pi. XXVIII. — Kenn., 

 Trans, ill. State Agr. Soc, 1853-54, L, p. 592.— Cope, Check 

 List N. A. Batr. and Kept., 1875.— Boulenger, Cat. Batr. Sal. 

 in Coll. Brit. Mus., 2d ed , 1882, Sal. Ecaudata, p. 372. -Yar- 

 row, Check List, 1882. —Davis and Rice, Bull. Ill State Lab. 

 Nat. Hist., L, No. 5, 1883, p. 20; Bull. Chicago Acad. Nat. 

 Sci., 1883. 



Toad-like; of medium size, about L6 inches long. With 

 small warts above; closely granulate over most of the ventral 

 surface. Palms granulate, with a large grooved tubercle; a 

 second tubercle on the basal part of the first finger. Soles 

 granulate, with an elongate tubercle at the base of the first 

 toe, and a very small one at the base of the fourth and fifth 

 toes. Body stout; head only moderately large; limbs strong. 

 Snout bluntly rounded. Mandible seen from below rounded 

 or truncate in front, produced upwards at symphysis, but not 

 swollen in front, as in 77. cinerea, so as to form a knot. Tongue 

 very short and broad, free for about one third its length be- 

 hind, and with a small notch. Vomerine teeth in two short 

 rows, slightly separated, between the internal nares. Eye large. 

 Tympanum about two thirds the longitudinal diameter of the 

 eye, beneath a rounded fold of the skin. Warts of the dorsal 

 surface small and isolated; entire under surface granulate, that 

 of the abdomen sharply and closely; that of the throat more 

 finely and less closely; while that of a wide strip between the 

 anterior legs is minutely granulate or nearly smooth. Legs 

 obscurely graaulate excepting the posterior surface of the 

 humeri and the upper surface (proper) of the posterior feet, 

 which are smooth, and the ventral surface of the femora, which 

 are sharply and closely granulate. Webs of fingers small; of 

 toes rather large, reaching the distal phalanx in all but the 

 fourth toe, where they reach the peoultimate. 



Color above ash-gray, brown, or green, variously marked 

 with dark bands and spots. A pale spot beneath each eye with 

 a dark one behind it, and an oblique dark band on the head 



