66 BATRACHIA. 



carpal disk, and an elongated tubercle at the base of the inner finger. 

 The tubercles under the articulations are found: one to the first and 

 second fingers, and two to the third and fourth. The fourth finger is 

 sliortest ; the second, a little longer than the first ; the third, always the 

 the longest of all. The toes are provided laterally with a membra- 

 nous fold, and webbed at their base. Their articulations are provided 

 beneath with small tubercles ; one to the first and second toes, two to 

 the third and fifth, and three to the fourth. The metatarsal tubercles 

 are very small, and not always readily distinguishable, especially the 

 outermost. The one situated at the base of the inner toe is more con- 

 spicuous, and has the shape of an elongated ridge rather than of a coni- 

 cal tubercle. A conspicuous, cutaneous fold exists along the iimer 

 side of the tarsus. The skin is perfectly smooth all over the head, 

 body, and limbs, though the upper regions exhibit small pustules, 

 especially the back. A membranous ridge may be seen over the upper 

 margin of the tympanum. 



The ground color above, is reddish-brown ; the body and head, ma- 

 culated with small spots and dots of a deeper brown extending all over 

 the head, snout, and jaws. These spots are much larger on the legs, 

 assuming upon the hind ones the shape of transverse bands. 

 The sides of the abdomen are dotted with white, and these white dots 

 extend somewhat posteriorly over the thighs. The inferior surface of 

 the head and chest is Avhitish ; the limbs, beneath, being reddish. 



A small individual exhibits much larger, not confluent, spots on the 

 back. 



The specimens are from Rio de Janeiro, Brazil. 



Plate IV, fig. 39, represents Elosia nasuta, size of life. 

 Fig. 40, is a side view of the head. 

 Fig. 41, an upper view of the head. 

 Fig. 42, under surface of the left hand. 

 Fig. 43, under surface of the right foot. 



2. Elosia bufonium, Grd. 



(Plate lY, figs. 23-27.) 



Car. spec. — OcuUs magnis et emineutihus. Tympano mocUco. Cute 



