NORTH AMERICAN BATRACHIA AND REPTILIA. 17 



• 



parotoids not confluent, rounded; two metatarsal tubercles; tongue 

 oval, elongated; toes more or less palmated; skin tuberculous; 

 no dorsal ossiflcation on head ; subgular vocal vesicle in males. 



43. B. lentiginosus^ subsp. americanus, LeConte. Common 

 Toad. Superciliary ridges well marked, though but moderately 

 elevated and not terminating in a knob posteriorly; skin on head, 

 thick, adhering to skull; tympanum well developed; parotoids 

 large, sub-reniform ; internal metatarsal tubercle large and spade- 

 shaped; toes semipalmated ; large tubercles on back; beneath 

 granulated; color above, greenish or yellowish-brown, with 

 scattered black spots or patc'hes ; two black patches under eyes, 

 and occasionally spots about nostrils and jaws; beneath dirty 

 yellowish, sometimes spotted and blotched; L. two and one-half 

 inches. Eastern United States; west to the plains. 



■44. B. lentiglnosus^ subsp. lentiginosus^ Latr. Superciliary 

 ridges much elevated posteriorly and terminating in a rounded 

 knob; mouth very large; tympanum and parotoid well developed, 

 the latter uniform; toes semipalmate; back warty; abdomen 

 granulated ; above dusky brown, tinged with yellowish, and more 

 or less blotched ; beneath dirty yellowish-white ; L. two inches. 

 Austroriparian region. 



45. B. lentiginosus^ ^Vths^. fowUri, Putnam, MSS. Massa- 

 chusetts to Lake "Winnipeg. 



46. B. quercicus^ Holb. Superciliary ridges slightly 

 elevated, terminating posteriorly in a small knob ; snout pointed ; 

 tympanum small; parotoids large, oblong; metatarsal tubercles 

 small; toes slightly webbed; back with a few small warts; 

 beneath granulated ; body greatly depressed ; back dusky, with a 

 pale yellow vertebral line, on each side of which are black 

 blotches, with here and there a tinge of reddish-brown ; beneath 

 silver-gray, with a yellowish tinge around vent; L. three-quarters 

 of an inch. Florida to North Carolina and Louisiana. 



47. B. valliceps^ Wieg. Upper surface of head deeply 

 concave ; skin thin, iirmly adhering to skull ; superciliary ridges 

 prominent; tympanum large; parotoids small; toes semipalmate; 

 above yellowish-brown, with a broad dorsal streak of same tint, 

 on each side of which is generally a black bar, extending the 

 whole length of body; sides maculated; beneath unicolor in 

 adults, spotted in young. Texas district and Louisiana. 



