22 BATKACHIA. 



seen at the base of the carpus ; they are quite flattened and not very 

 apparent. The palm of the hand exhibits two horny disks, otherwise 

 it is smooth; small tubercles exist under the articulations of the fingers. 

 The feet are very broad, proportionally broader than in R. aurora. 

 The membrane which unites the toes extends to their very tip, form- 

 ing a very open curve between each of them. The fourth, or longest 

 toe alone, stretches a little way beyond the edge of the web. Small, 

 but conspicuous tubercles, are observed under each digital articulation; 

 besides, there are very small granules along the toes and all over the 

 tarsus. A compressed horny tubercle is to be observed at the base 

 and outer edge of the inner toe, and a very small and conical one at 

 the base of the longest or fourth. The skin, at first sight, appears 

 smooth, but, on a careful examination, granules will be found on the 

 upper part of the head, down the back and sides, and over the limbs ; 

 more developed, however, posteriorly, on the region of the coccyx and 

 thighs. It is the same granulation which we have noticed under the 

 feet. The inferior surface of the head, belly, and inner side of the 

 legs, is perfectly smooth. 



The upper surface of the head and snout exhibits small black spots. 

 A black line extends from the nostrils to the eyes, and from the pos- 

 terior rim of the orbit to near the shoulder, exists an elongated, pos- 

 teriorly tapering, deep-brown band, margined with black, and covering 

 entirely the tympanum, such as may be observed in Rana temporaria 

 of Europe, and Rana sylvatica of the United States. 



The upper region of the body and limbs is yellowish-brown; irregu- 

 larly rounded black blotches and dots may be seen along the dorsal 

 region between the glandulous ridges ; these series or zones are them- 

 selves of a lighter hue, lined above and below with irregular black 

 dots. The sides of the abdomen are greenish-brown or dusky. The 

 upper surface of the limbs are blotched in the same manner as the 

 back, more conspicuously upon the hind ones. The color beneath is 

 dull yellowish-white, marmorated anteriorly with brown. 



In the immature state the dorsal blotches are very distinctly marked, 

 subcircular or oblong, forming three irregular series, on a ground 

 color that has much less of the red than in the adult. Beneath of a 

 soiled white. The granulation of the skin is as strongly marked as 

 in the adult. 



The color, as described here in the young as well as in the adult, is 

 taken from specimens preserved in alcohol, no sketch having been 

 made from life. 



