464 



BOULENGER. 



extensive web between the toes, in the former, there is almost complete 

 agreement between the descriptions of the two, which are from the 

 same part of Costa Rica. 



Cope's description is here reproduced: — 



■" Identical with Ranula but without vomerine teeth. Form robust, 

 muzzle short, wide; hind limbs rather short, the heel reaching to the 

 front of the eye. Can thus rostralis strongly marked, angulated at 

 the nostril, anterior to which it is deflected to the apex, which does 

 not project beyond the lip-border. Loreal region slightly concave; 

 nostril nearly on canthus, .6 the length of the muzzle anterior to the 

 orbit. Tympanum drum subround, about .7 the diameter of the 

 eye-slit. Choanse rather small, about equal to ostia pharyngea. 

 Tongue large, obovate, deeply emarginate posteriorly. Digits with 

 slight terminal enlargements, those of the fmgers scarcely distinct, 

 those of the toes supported by elongate T-shaped phalanges. Second 

 (first) finger a little shorter than third (second); inferior tubercles 

 inconspicuous. Toes half-webbed, fourth digit with three, the others 

 with two free phalanges. Sole with one tubercle, the flat oval prae- 

 hallax. Integument smooth everywhere. A wide glandular body 

 connecting rictus oris and humerus; a glandular thickening extending 

 from orbit to end of urostyle, which ^* is unusually wide between the 

 orbit and the sacrum. No dermal folds. 



Color above a dark olivaceous gray; side of head and a stripe 

 from orbit to urostyle, black. Two rows of small black spots on each 

 side of the vertebral column. Superior side of limbs colored like 

 the back. Inferior surfaces of the body yellowish, more distinctly 

 yellow on inferior surfaces of hind limbs. Concealed surfaces of 

 femur with a reddish tinge, unspotted. Superior face of femur with a 

 black stripe on the distal half. Lips unspotted, with a dark shaded 

 border. 



Length of head and body 65 mm.; length of head to rictus oris, 

 21 mm. ; width of head at rictus oris, 25 mm. ; length of fore limb, 

 40 mm.; of head 15 mm.; length of hind limb 101 mm.; of hind foot, 

 49 mm.; of astragalo-calcaneum, 16 mm." 



Rancho Rodondo, on the divide of the Irazu Range, and Isla Nueva, 

 near the head of the Rio Sucio, on the Atlantic side. 



14 The glandular thickening. — G. A. B. 



