1886.1 f> ^ [Cope. 



A dermal groove extends posteriorly from tke eye to the side of the neck 

 above the anterior border of the humerus. A branch groove descends a 

 short distance posterior to the eye and turns forwards to the canthus of the 

 mouth. These grooves divide masses of crypts, those on the inferior side 

 of the groove being most prominent. The tract above the groove re- 

 sembles the parotoid gland of the Ambly stoma par olicum, but is much less 

 distinctly defined, fading out upwards. 



There are eleven well-defined -lateral dermal folds, and space for a 

 twelfth, which will probably be found well defined in other specimens. 

 The back from the interscapular region posteriorly, and the superior part 

 of the tail, are thickly studded with crypts. There is a slightly defined 

 gular fold. 



The fore limb is as long as from its anterior base to the anterior margin 

 of the eve. The toes are quite short, and their lengths, beginning with 

 the shortest, are 5-2-3—4. The posterior loot is especially robust, and the 

 sole is wider than the length of the longest finger. There are no distinct 

 tubercles on the sole. The lengths of the toes are, beginning with the 

 shortest, 1-5-2-4-3. 



Measurements (iVo. 14,4.93). M. 



Total length 174 



Length to base of tail 090 



" " groin , 071 



"axilla 031 



" " line of eyes , 005 



" of fore leg 026 



" " foot 010 



" " cubitus 008 



" hind leg 026 



" " foot 0105 



Width between nostrils 005 



" " eyes 006 



" of head 016 



" " sole c -008 



Depth of tail at middle 008 



The manner of describing the color pattern of this species depends on 

 what we regard as the ground. We can assume that the ground color is 

 represented by a dark chocolate brown and say that this is closely studded 

 with brownish white spots of irregular forms and sizes. On the back, 

 limbs, and top and sides of the head, the pale spots are so close together 

 as to reduce the brown to a net-work ; on the fore legs the pale spots are 

 larger than anywhere else. The spots are few on the tail, and those 

 chiefly near the base. The inferior surfaces are dirty light brown. 



The characters which separate this species from the A. paroticum are, 

 the much shorter series of vomeropalatine teeth ; the shorter fingers and 

 toes ; the less distinct parotoid glands ; the shorter and more obtuse head, 

 and the coloration. 



FttOC. AMER. FHILOS. SOC. XXIII. 124. 30. PRINTED DEC. 1, 1886. 



