420 bulletin: museum of comparative zoology. 



by a loose flap of skin. Digits free, stout, slightly dilated at the tips; the first 

 and second fingers equal in length and only a trifle shorter than the fourth; the 

 elbow extended forward reaches the posterior edge of the orbit. Toes fully 

 webbed, but the webs so fully notched that they appear only half webbed; a 

 free border of skin on the inner side of the tarsus and another on the outer side 

 of fourth toe; subarticular tubercles slightly developed; a distinct inner and a 

 low outer metatarsal tubercle; heels nearly in contact when the hind limbs 

 are folded at right angles to the axis of the body; the tibiotarsal articulation 

 reaches about two millimeters behind the posterior edge of the orbit when 

 the hind limbs are carried forward along the body. Skin smooth except for a 

 few low tubercles on the head and shoulders, the tubercles most abundant in 

 the occipital region; clusters of horny spines, characteristic ofthe male in the 

 breeding season, grouped on the chest and outer side of thumb; a well-de- 

 veloped supra tympanic fold which extends to the groin; two transverse folds 

 and a number of flat tubercles just posterior to the angle of the mouth; several 

 folds on the sides of the body; two loose flaps of skin extending the length of 

 the posterior side of the thighs. 



Color above dark brown indistinctly mottled and spotted with darker brown, 

 color below uniform yellowish grey. 



Dimc7isio7is. 



Tip of snout' to vent 46 mm. 



Tip of snout to posterior end of mandibular bone 16 " 



Greatest width of head 15.5 " 



Fore leg to tip of longest finger 28 " 



Hind leg to tip of longest toe 64 " 



Remarks. Cope says in the type description: — " Labial integument 

 largely free and overhanging the lower jaw." We have examined 

 carefully the five paratypes (Acad. nat. sci. Phil. 1,435-1,457, 16,177, 

 16,178) and it is certain that the labial integument of the type-speci- 

 men has been artificially torn away from the skull. The paratypes 

 are much better preserved than the type and the labial integument 

 of each one is normal. The labial integument is likewise attached 

 to the skull, normally, of course, in the ten specimens, nine from 

 Vincocaya and one from Arequipa (M. C. Z.). 



Telmatobius jelskii (Peters). 



Pseudobatrachus jelskii^ Peters, Monatsb. Berl. akad., 1873, p. 415. 

 Cyclorhamphus marmqratus Gtinther, P. Z. S. London, 1859, p. 89. 

 Telmatobius jelskii Boulenger, Cat. Batr. Sal. Brit, mus., 1882, p. 191. 



