76 



B A T R A C H I A. 



than the second, which is the shortest. The articulations of the pha- 

 langes are provided beneath with tubercles of moderate development. 

 Their inferior surface is otherwise smooth, except a few scattered 

 granules, which may be observed on the palm of the hand. The 

 central metacarpal disk is large and subcircular. The inner one, 

 occupying the base of the first finger, is very conspicuous and propor- 

 tionally more developed than in any other North American species of 

 the genus. The hind limbs are longer than the body and head together, 

 of the whole length of the foot. The toes, themselves, are subdepressed, 

 tapering, and webbed to their very tip, the membrane being but slightly 

 emarginated. The tubercles under the articulations of the phalanges 

 are but a little larger than the granules, which are spread over the sole 

 of the feet. The inner metatarsal process is subconical and well 

 developed ; the outer one is quite depressed upon a broad base. The 

 metatarsus beneath is granular, and its inner lower edge provided 

 with a conspicuous membranous fold. 



The skin above is covered with large pustules or small perforated 

 glands, secreting a viscous fluid, analogous to that secreted by the 

 parotids. On the anterior region of the body there is a tendency of 

 these glands to arrange themselves upon a double series, one on each 

 side of the dorsal line, slightly converging towards the occiput, hence 

 diverging towards the upper eyelid, where they unite with the series 

 above alluded to, as occupying the inner border of that organ. The 

 intervening space between the pustules is warty, verrucose, or subtu- 

 berculous. Underneath, the warts are very crowded and large. The 

 anterior limbs are smooth above, warty anteriorly and beneath. The 

 posterior ones have the same appearance as the upper surface of the 

 body. The upper part of the foot and the anterior part of the tarsus 

 and tibia are smooth. The snout, the sides of the head, and interocular 

 space are perfectly smooth. 



The ground color is of an intense green, with a yellow dorsal vitta, 

 extending from the interocular space to the posterior extremity of the 

 body. A yellow tint, sometimes intermingled with a reddish hue, 

 predominates over the limbs, especially the hind ones. The parotids, 

 the pustules, and the glandulse, are reddish. The inferior surface of 

 the bedy is of a soiled white, maculated with black ; under the head 

 and thighs, unicolor, dull-yellowish. The interdigital membrane 

 being purplish. 



