40 BATRACHIA. 



on the hind legs the blotches assume a transverse arrangement. Dots 

 of the same color as the blotches are spread all over the surface, inter- 

 mingled with whitish dots. Black spots are always to be observed on 

 the lumbar glands, but not constantly upon their middle; they occupy 

 sometimes the posterior half, varying in height. Several spots may 

 likewise be noticed on the same gland. In one individual, where the 

 blackish spot occupies the central portion of the gland, being sur- 

 rounded then by a whitish areola, a whitish dot existed in the centre 

 of the spot. A brown vitta extends from the eye, over the line of the 

 canthus rostralis, to the very margin of the jaw, covering the nostril ; 

 the vitta from either side not coming into contact. In advance and 

 under the eye is a patch, variable in shape, generally, however, sub- 

 quadrangular, and occasionally extending from the margin of the jaw 

 to the rim of the orbit. From the j)ostero-inferior part of the orbit to 

 the shoulder, extends an elongated and tapering patch of deep-brown, 

 sometimes margined with white. Immediately above the tympanum 

 and behind the eye, is another irregular patch. The occipital region 

 is covered by the largest patch ; in advance of which, and between the 

 rostral vitta3, may be seen an elongated spot of the same color. 

 Beneath, the color is whitish, the legs being sometimes reddish and 

 occasionally clouded. 



Numerous specimens were collected at Valparaiso, Coast of Chile. 

 "Keeps about wet grounds, and manners entirely those of the true 

 Rana." [Pickering.] 



Plate IV, fig. 33, represents Pleurodema hibroni, size of life. 



Fig. 34, is a side view of the head. 



Fig. 35, the head, seen from above. 



Fig. 36, the head, seen from beneath. 



Fig. 37, under surface of right hand. 



Fig. 38, under surface of left foot. 



. 2. Pleurodema elegans. Bell. 

 (Plate IV, figs. 28-32.) 



Spec. Char. — An ovoid lumbar gland on each side. Tympanum 

 apparent, very small. Toes with a basal rudimentary membrane. 



