BATRACHIAANOURA. gg 



4. BITO GRACILIS, Grd. 

 (Plate VI, figs. 16-21.) 



CAR. SPEC. Ckipitis facie suj rinre corvxi' Glandulls parotidis 



exiijiii-y. Ti/inpniti) iH'Kjito. PUcatura m>'iitbniitea in tarso. Plan* 

 t<iritut iliijiti* xubp'dinafi*. Cute fjranulahi. Xapra fusco-flavesc>nt>:, 

 cum viffa j/'trm Jorsuali ; dorso et crurilm lii<- l/lic maculatis. Infra 

 luteo. 



SPEC. CHAR. Upper surface of head concave. Parotids exiguous. 

 Tympanum large. A membranous, tarsal fold. Toes subpalmated. 

 Skin granular, yellowish-brown above; a dorsal, yellow vitta; back 

 and limbs irregularly spotted. Beneath dull-yellow. 



^s.Bufoyracilis, GRD. in Proc. Acad. Nat. Sci. Philad. VI, 1S53, 424. 



OBSERV. The physiognomy of this species partakes more of the 

 ranine group than the following one, having a more elongated body 

 and a proportionally smaller head. The limbs, however, appear as if 

 cast in the same mould, being slender and elongated, and the toes 

 but slightly palmated. The parotids, likewise, are small, but more 

 exiguous, and the tympanum greater. The lateral glandulous stripe 

 is a feature which B. luyubrosu* does not possess. In regard to the 

 head, it is the same sharp snout, and terminal situation of the nostrils; 

 the same depression and ridges of the skull, and the body similarly 

 warty, though the warts are proportionally smaller. This particu- 

 larity of being provided with warts is common to many species of 

 toads, and does, therefore, not constitute a specific trait. 



DESCR. The head forms about the two-sevenths of the entire 

 length ; it is nearly as long as broad, and seen from above, it is tri- 

 angular ; slightly truncated upon the snout, which is rather promi- 

 nent, and obliquely inclining inwards, the upper part overhanging the 

 lower. The nostrils are obliquely situated towards its extremity, 

 beneath the canthus rostralis, which is but slightly apparent. The 

 upper surface of the snout, from the eyes to its tip, is perfectly even, 

 sloping forwards; the sides of the same are almost abrupt. The 



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