BATRACHIAANOTJRA. 69 



Fig. 25, an upper view of the head. 

 Fig. 26, under surface of the right hand. 

 Fig. 27, under surface of the right foot. 



3. ELOSIA VOMERIXA, Grd. 

 (Plate IV, figs. 17-22.) 



CAR. SPEC. Ocitlis tympanoque modicis. Cmribus longls et tenuibus. 

 Cute laei-i sine pustulis. Supra fuscata, postice macuiata. A latere 

 liiiea fusca. 



SPEC. CHAR. Eyes and tj ? mpanum moderate. Legs long and slender. 

 Skin smooth, without pustules. Dusky-brown above, posteriorly 

 maculated. A lateral, deep-brown band. 



STN. Elosia vomerina, GRD. in Proc. Acad. Xat. Sci. Philad. VI, 1853, 423. 



OBSERV. It is not without hesitation that we have placed this 

 species in the genus Elosia, on account of the peculiar disposition of 

 the vomerine teeth. Considering, however, the shape of the head, 

 the structure of the feet and toes, we have preferred to associate 

 it with the species described above until further investigations shall 

 have been made into the Herpetology of South America. 



DESCR. The head, a little broader than long, forms about the third 

 of the length, the legs excluded. It is subconcave, or flattened upon 

 its upper surface, with a very slight declivity towards the snout. The 

 latter is nearly rounded, its terminal outline forming a very open tri- 

 angle. The nostrils are small and subcircular, placed a little nearer 

 the tip of the snout than'the anterior rim of the orbit. The eyes are 

 large and subelliptical ; their longitudinal diameter being equal to the 

 rostral distance in advance of their anterior rim. The upper lid is 

 smooth, and its margin not prolonged over the canthus rostralis. The 

 tympanum is proportionally larger than in the preceding two species, 

 and its diameter is equal to the distance between the eye and the nos- 

 tril. The tongue is subcircular, discoid, broadly emarginated poste- 

 riorl\ T , where it is free for about one-fourth of its length ; its edges are 

 free also. The vomerine teeth, situated between the inner nostrils, 



18 



