44 ZOOLOGY OF THE YOYAGE OF THE BEAGLE. 



above, with a lighter band across the head between the eyes, and there are traces 

 of a longitudinal line down the back ; the limbs are banded with brown and 

 brownish yellow ; the under parts are pale, dotted with brown. 



DIMENSIONS. 



In. Lin. 



Length of the head 5 



of the body 1 



of the anterior extremities 1 



of the posterior extremities 2 1 



Found by Mr. Darwin at Valdivia. 



Genus— HYLORINA. Bell. 



Caput subrotundum planum. Linguae magna circularis, postice libera. Dentes 

 palatini in lined transversa, parum interruptd, dispositi. Tympanum distinctum. 

 Digiti subdepressi, ad apicem obtusi, haud expansi ; anteriores Jere liberi ; poste- 

 riores ad basin membrand connexi, et marginati. Femora multd glandulosa. 



A genus nearly allied to Hylodes, from which, however, it may at once be 

 distinguished by the palmure of the hinder toes — which in Hylodes are entirely 

 free — and by the absence of even the slightest dilatation of their extremities ; 

 offering another example of an osculant form between the Hylid^e and the 



RaNJDvE. 



Hylorina sylvatica. Mild. 

 Plate XIX.— Fig. 1. 



Description. — Head broad, rounded, the anterior margin, from the nose to the lip, nearly perpen- 

 dicular. Eyes large and prominent. Tympanum distinct, small, round. Tongue very large, 

 circular, and entire, the posterior half free. Palatine teeth placed in a transverse line 

 between the posterior nostrils, scarcely interrupted in the middle. Skin of the back rugose. 

 Anterior feet with the toes long, rather slender, united at the base only by a very short mem- 

 brane, with round subarticular tubercles, the apex rounded, but not presenting the slightest 

 expansion. Hinder toes similarly formed, but with the connecting membrane more con- 

 spicuous, and extending along the sides of the toes nearly to the extremity. Thighs covered 

 on the under and posterior surface with rather large and distinct glands. 



