34 BATRACHIA. 



metatarsal tubercles. A ridge along the inner side of the tarsus. No 

 lumbar glands. Skin minutely granular. Above light-brown, dotted 

 with white and clouded with reddish. A subtriangular, occipital, 

 deep-brown patch. A postocular vitta of the same color. Hind 

 limbs barred with reddish-brown. Beneath unicolor. 



g Y N. Cystiynathus nebulosus, GHD. in Proc. Acad. Nat. Sci. Philad. VI, 1853, 422. 



DESCR. The head forms the third of the length, the limbs excluded. 

 It is much depressed, as long as broad, subelliptical when viewed from 

 above. Its upper surface is subcpncave, and the canthus rostralis not 

 very prominent. The nostrils are small, elongated, obliquely situated 

 towards the origin of the anterior declivity of the snout; they are equi- 

 distant between the extremity of the upper jaw and the anterior rim of 

 the orbits ; the snout itself being quite prominent. The phrenic region 

 is but slightly concave. The eyes are prominent, elliptical, with 

 their longitudinal diameter equal to the three-fourths of the rostral 

 distance, which extends from their anterior margin to the extremity 

 of the upper jaw. The surface of the eyelid is granular like the head 

 and body, and its external margin thickish and smooth. The inter- 

 ocular space is equal to the greatest width of the eyelid. The tym- 

 panum is not seen exteriorly. The mouth is broad ; the upper jaw 

 being slightly emarginated, whilst the lower one is provided with a 

 small knob upon its symphysis. The tongue is large, thick, smooth, 

 subcircular, slightly notched posteriorly, and free upon a very small 

 extent. The inner nostrils are subcircular and proportionally large. 

 The elongated groups of vomerine teeth are obliquely situated between 

 the inner, nostrils, at a little distance from the anterior edge of the 

 latter openings. The Eustachian tubes are small and quite incon- 

 spicuous. 



The body is elongated, raniform, depressed, narrowest posteriorly. 

 The legs are slender and elongated ; the anterior pair extending 

 beyond the vent when bent backwards. The fingers are depressed, free, 

 tapering, and rounded upon their extremities ; the first one is longer 

 than the second. The under aspect of their articulations is provided 

 with small and conical tubercles. The palm of the hand is minutely 

 granular. There are two large metacarpal tubercles, the outermost 

 being considerably the largest. The hind legs are longer than the 

 body and head together, of the whole length of the fourth finger. 

 The heels meet together at the coccygeal region. The tarsus exhibits 



