BATRACHIAANOURA. (55 



1. ELOSIA NASUTA, Tsch. 

 (Plate IV, figs. 39-43.) 



SPEC. CHAR. Eyes large and prominent. Tympanum small. Legs 

 slender and elongated. Skin above, smooth, with small pustules. 

 Reddish-brown, maculated above ; sides dotted. 



SYN. Hyla nasua, LIGHT. Verzeichn. Doubl. Zool. Mus. Berl. 1823, 106. FITZ. N. 

 Class. Kept. 1826, 63. 



Elosia nasuta, TSCH. Mem. Soc. Sci. nat. Neuch. II, 1838, 36 & 77. DUM. & BIBR. 

 Erp. g<Sn. VIII, 1841, 632. 



DESCR. The head is a little longer than broad, and forms about the 

 third of the length, the legs excepted. It is flattened above, and 

 slightly declivous upon the snout, the terminal outline of which, when 

 seen from above, is that of an obtuse triangle. The nostrils are sub- 

 elliptical, and situated midway between the anterior rim of the orbit 

 and the extremity of the snout, though on a profile view of the head 

 they would appear almost terminal. The sides of the snout are some- 

 what concave along the line of the canthus rostralis. The eyes are 

 large, subcircular. and prominent ; their horizontal diameter being 

 twice the distance between them and the nostrils. The upper lid is 

 smooth ; its outer margin is horny, and continued over the canthus 

 rostralis. The tympanum is subcircular ; its diameter being scarcely 

 half that of the eye, that is to say, comprised twice along the distance 

 between the eyes and nostrils. The mouth is proportionally large, 

 and the tongue thickish, depressed, and subelliptical in its outline, a 

 little narrower anteriorly, entire posteriorly, adhering by almost its 

 whole under surface ; the very margin alone, laterally and poste- 

 riorly, seemingly free. The vomerine teeth constitute two elongated 

 and oblique groups, placed between the inner nostrils. The latter are 

 subcircular and moderate in size. The openings of the Eustachian 

 tubes are very conspicuous and nearly as large as the inner nostrils. 



The limbs are long and slender. In stretching the anterior ones 

 alongside the body, some of the fingers will extend beyond the poste- 

 rior extremity of the body, while the posterior ones are longer than the 

 body and head, by the entire foot. There is a large, flattened, meta- 



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