404 bulletin: museum of comparative zoology. 



Dimensions. 



Distance from snout to vent 52 mm.. 



Greatest width of head 21 " 



Distance from axilla to tip of longest finger 29 " 



Distance from groin to tip of largest toe 89 " 



Notes on Paratypcs. The twenty-nine specimens in the series show 

 considerable diversity in color. The ground-tone varies from a yellow 

 or a dull pink to a very dark brown. The specimens vary in length 

 from 23 to 58 millimeters (snout to vent). Most of the small speci- 

 mens have a very distinct pattern with a dark interorbital bar and two 

 spots anterior to it. Two small* specimens have a light vertebral line. 

 The pattern does not appear in a few of the specimens. Very dark 

 specimens have the throat stippled with brown. 



Eleutherodactylus cajamarcensis, sp. nov. 



Diagnosis. Related to the Borborocoetes group of Eleutherodactylus, e. g. 

 E. whijmperi, E. unistrigatus etc.; probably most closely related to E. riveti 

 (Despax) ; distinguished from the latter species by the following characters : — 

 tympanum distinct slightly less than half the diameter of the eye; first toe 

 shorter than the second; skin smooth on the snout, slightly granular on the 

 eyelids and back, the granules tending to form a series of longitudinal rows; 

 coloration nearly uniform yellowish grey; a few dark lines forming a weak 

 pattern; ventral surface immaculate. 



Range. Only known from the type-specimen. 



Tyjye. Sexually mature male, M. C. Z. 5,407 from the Pre-Incan 

 ruins near Huambos, Cajamarca, northwestern Peru; 10 October, 

 1916, G. K. Noble. 



Description of Type. Size small, body depressed; head broad, Hyla-like; 

 head about as broad as the body; broader than long; snout blunt with very 

 distinct cmithus rosiralis; orbital diameter much greater than the distance 

 between eye and the nostril; the latter situated very near the end of the snout; 

 interorbital space a little broader than upper eyelid. Vomerine teeth barely 

 distinct, in two obliquely directed groups, extending backward from the inner, 

 posterior margins of the choanae. Tympanum distinct, slightly less than half 

 the diameter of the eye. Fingers stout, the second extending beyond the first; 

 toes short, a vestige of a web between the outer three; discs distinct, those 

 of the toes larger than those of the fingers; subarticular tubercles well de- 



