BAKBOUR AND NOBLE: AMPHIBIANS FROM PERU. 405 



veloped, a round outer and a very elongate inner metatarsal tubercle, both 

 very distinct. Tibiotarsal articulation reaching only to the tympanum. 

 Skin smooth on the snout, slightly granular on the eyelids and back, the 

 granules on the back tending to form a series of indistinct longitudinal rows; 

 sides of the body warty; ventral surface strongly granular. 



Coloration in alcohol nearly uniform yellowish grey; a dark canthal stripe 

 fading out behind the tympanum; a number of indistinct brownish bands 

 extending along the back; three oblique bands across the legs, these tending 

 to form continuous lines when the leg is half extended; ventral surface uni- 

 form yellowish grey, much yellower than the dorsal surface. In life the 

 ground-tone was yellowish pink and the dark pattern was fairly distinct. 



Dimensions. 



Distance from snout to vent 19 mm. 



Greatest width of head 7.5 



Distance from axilla to tip of longest digit 12 



Distance from groin to tip of longest toe 26 . 5 





Leptodactylus curtus, sp. nov. 



Diagnosis. A short-legged species having no fringes on the toes, apparently 

 related to L. bufonius Boulenger; head short, the profile chisel-shaped; tym- 

 panum half the diameter of the eye; no distinct dorsolateral fold; back and 

 sides with a few low warts. 



Range. Valleys of the Chinchipe and Maraiion Rivers between 

 Perico and Bellavista, northwestern Peru. 



Type. M. C. Z. 5,281 from Bellavista, Cajamarca, Peru; 28 Sep- 

 tember, 1916, G. K. Noble. 



Description of Type. Size moderate; head about as wide as the body, just 

 as long as broad; snout very accuminate without canihus rostralis, but with a 

 slight depression in the loreal region; profile of snout a very acute angle, the 

 anterior corner of the eye, the nostril and the tip of the snout being in the same 

 plane; orbital diameter slightly greater than the distance between eye and 

 nostril, slightly less than the distance between nostril and end of the snout; 

 interorbital space about one half as broad as the upper eyelid. Tongue oval, 

 slightly nicked behind. Vomerine teeth in two well-arched series behind the 

 choanae. Tympanum one half the diameter of the orbit. First finger much 

 longer than the second; toes short, not fringed; subarticular tubercles well 

 •developed; the inner metatarsal tubercle very large, the outer barely visible; 



