FROGS OF COLOMBIA — COCHRAN AND GOIN 515 



Color in alcohol. — Dorsum a pale lavender cream with no sharp 

 line of demarcation between dorsal ground color and the pale ventral 

 ground color. Although the specimen is now somewhat faded, traces 

 of the dorsal color are evident on the upper surfaces of the forearms 

 and shanks. The dorsal surface is marked by nine distinct, rounded 

 white spots: three unpaired median ones — one between the eyes, one 

 above the sacral vertebra, and one above the middle of the urostyle — 

 and three pairs of spots along the back — one pair behind the eyes, 

 one pah* above the axilla, and one pair just anterior to the sacral 

 vertebra. 



Remarks. — The described specimen has been in a bottle labeled 

 Centrolene prosoblepon that has been in the British Museum collections 

 for half a centruy. We are not the first to recognize the specimen as a 

 novelty, for the bottle contains the following note in the handwriting 

 of the late E. R. Dunn: "not c. prosoblepon, sp. nov.? Dunn." 



We take pleasure in dedicating this species to Miss Alice G. C. 

 Grandison of the British Museum. 



Centrolenella johnelsi, new species 



Figure 54 



Holotype. — MLS 432, collected at San Pedro, north of Medellin, 

 Antioquia, Colombia, by Hno. Niceforo Maria. 



Diagnosis. — A centrolenid without vomerine teeth, with a heavily 

 pigmented dorsum thickly beset with distinct, pointed, white tubercles. 



This new species can be distinguished from all Colombian centro- 

 lenids except antioquiensis, buckleyi, and fleischmanni by the absence 

 of vomerine teeth; from those three species it can be distinguished by 

 having densely placed, white, spiny protuberances on the dorsal 

 surfaces. From antioquiensis, to which it is most similar in build, it 

 can be further distinguished by having reduced webbing between the 

 fingers. 



Description oj holotype. — Vomerine teeth absent; choanae small, 

 rounded, separated from each other by an interval equal to about four 

 times their own diameter; tongue small, about two-fifths as wide 

 as mouth opening; pear-shaped, its posterior border fused and un- 

 notched. Snout short, rounded, truncate in profile, the upper jaw 

 extending just slightly beyond lower; nostrils not at all superior 

 and more anterior than lateral, slightly projecting, their distance 

 from end of snout about one-half their distance from eye, separated 

 from each other by an interval equal to their distance from eye. 

 Can thus rostralis slightly defined; loreal region concave and somewhat 

 oblique, the upper lip flaring out distinctly below it. Eye large, very 

 prominent, its diameter more than its distance from nostril; palpebral 



