THE BATRACHIA OF NORTH AMERICA. 291 



BUFO QUERCICUS Holbrook. 



North Amer, Herp., V, 13, 1846, Tab. iii, Cope, Proceeds. Amer. Pbilosoph. Soc. 

 1886, p. 515. 



Chilophryne dialoplia Cope, Proceed. Ac. Nat. Sci. Pbila., 1862, 341 (erroneous locality). 

 Uiifo dialo2)hus Boulenger, Cat. Batr. Sal. Brit. Mus., ed. ii, 1882, p. 319. 



Head broad; muzzle proraiuent, conic. Crauiiim strongly ridged. 

 I'reociilar and postocular, supratjmpauic, and superciliarj" ridges well 

 <]eveloped, the last making a very open angle with that of the cautlius 

 rostralis, and sending off posteriorly a parietal, which first converges 

 toward that opposite, and then runs transversely on the occiput to 

 meet it, failing in this by a very slight interval. A small nuchal pit. 

 Tympanum in contact with postorbital ridge, only one-fourth the size 

 of the orbit. Tongue small, narrow, half free; a strong symphyseal 

 tubercle fitting a premaxillary pit. Parotoids large, short, descending 

 on sides to opposite lower edge of tympanum. Skin everywhere rigidly 

 rugose, subspinous on the tarsus. The joints of the extremities are 

 pale and appear swollen. Fingers slender; first shorter than second, 

 which equals the third. One metacarpal tubercle only. Toes short, 

 one third webbed ; two acute metatarsal tubercles, the internal large, 

 incurved, like a flattened spur, yellow, brown tipped. Length of head 

 and body, 10 lines; of hinder extremity, 12 lines. 



The head above is dusky, with a yellowish central longitudinal line; 

 tlie superciliary ridges are gray, with a white mark in the center. On 

 each side of this longitudinal line is au oblong black spot, extending 

 from it to include most of the posterior part of the orbit of the eye ; a 

 small part only of the orbit in front of this is light colored ; the ux)per 

 jaw is light brown. 



Fig. 72. Bufo quercicus Holbr., 11394, natural size; Milton, Fla. 



The back of the animal is dusky brown, with a vertebral line of pale 

 yellow, marked with a few scattered small warts of reddish-brown co'or. 

 On each side of this line are irregular black blotches, with here and 

 there a slight tinge of reddish-brown. The back is covered with in- 

 numerable warts and granulations of variable size and color, generally 

 black, but the smaller ones of dusky red. On each flank, and extend- 

 ing trom the axilla downwards toward the posterior extremity, is an 

 oblong black blotch bounded with white both above and below. 



The throat is dusky ; the abdomen silvery-gray, yellowish at the 

 groin, and with a pale tinge of yellow around the vent. The anterior 

 extremities, as well as the posterior, are dusky brown above, marked 

 with black transverse bars or spots. Their inferior surface is colored 

 like the abdomen, except the fingers and toes, which are reddish-brown, 



