B A T R A C H I A A N U R A. 49 



interocular space is somewhat smaller than their diameter. The tym- 

 panum is rather large, elliptical, and obliquely situated above the angle 

 of the mouth. Its greatest diameter is equal to that of the eye. The 

 mouth is large ; the tongue elliptical, notched posteriorly, and free for 

 about one-fifth of its length. The inner nostrils are large, semi-circular, 

 concave upon their posterior margin ; their anterior margin being nearly 

 rectilinear. The openings of the Eustachian tubes are larger than the 

 inner nostrils, and similarly shaped, but their convexity is on the 

 opposite side. The vomerine teeth constitute two elongated groups, 

 disposed upon a transverse line between the inner nostrils; very little 

 interrupted upon the middle, and close to the inner edge of the latter 

 openings. 



The body is broader than deep ; the neck is slightly contracted. 

 The limbs are well developed ; the anterior ones, when bent back- 

 wards alongside with the body, project the tip of their fingers beyond 

 the groins. The fingers, themselves, are depressed and perfectly free; 

 the first one is nearly equal to the second ; the fourth is longer than 

 the first and second ; the third is the longest ; they are provided with 

 large tubercles under their articulations. The terminal disks are sub- 

 elliptical. The palm of the hand is granular. There are no meta- 

 carpal tubercles ; the base of the first finger is considerably swollen, 

 and upon its outer margin may be seen a horny growth representing 

 probably the tubercle which is usually found there in batrachians. 

 In bringing the posterior legs forwards, the tarsus and foot project 

 beyond the extremity of the snout. A membranous fold is observed 

 along the inner edge of the tarsus. A single, considerably developed, 

 metatarsal tubercle exists at the base of the outer toe. The sole of 

 the feet is smooth. The toes are depressed like the fingers, and pro- 

 vided beneath their articulations with conspicuous tubercles. The 

 digital dilatations are smaller than anteriorly, but are elliptical in their 

 shape. The membrane which unites the toes, extends to the extremity 

 of the last phalanx (to the last but one in the fourth), but is emargi- 

 nated, though not so much so as in the following species. 



The skin is smooth throughout, if we except the sides of the abdo- 

 men, the belly, and the inferior surface of the thighs, which are 

 glandulous. 



The ground color above, is of a beautiful deep-green. On each 

 side of the back there is a sinuous golden streak. A similar band of 

 gold extends from behind the eyes to the posterior region of the body. 



13 



