176 ANNALS NEW YORK ACADEMY OF SCIENCES 



web; inner and outer metatarsal tubercles present; no tarsal fold; first 

 toe as long as the second; vomerine teeth in two linear oblique patches, 

 converging posteriorly, well separated on the median line, behind and 

 within the choanre by about the diameter of the choana; tongue large, 

 slightly nicked behind ; skin rugose above, with rounded tubercles ; a well- 

 marked mid-dorsal ridge from snout to vent; eyelid strongly rugose; 

 venter smooth (faintly rugose under the lens); thighs slightly rugose; 

 male with a large subgular vocal sac. 



Dorsum gray, mottled with grayish brown; a well-defined interorbital 

 dark band; sides of can thus with a dark mark, interrupted by the eye, 

 extending over the tympanum, legs not barred, with dusky markings; 

 venter uniform, light. 



Measurements 



Tip of snout to vent 19 mm. 



Tip of snout to posterior border of tympanum 7 



Greatest breadth of bead 6.5 



Foreleg from axilla 12 



Hind leg from vent 29 



Tibia 9 



This species was discovered by accident, singing on a leaf some three 

 feet from the ground. Its note is the most distinctive of any observed 

 in Porto Eico, beginning with a shrill continuous note almost at the limit 

 of audibility, which is followed by a succession of clicks. So closely does 

 this note resemble a familiar type of note produced by long-horned grass- 

 hoppers that the writer neglected to search for the author of the sound, 

 and watched the present specimen repeat the song several times before 

 being convinced that it really proceeded from an Eleutherodactylus. 



It is closely related to E. auriculatus, from which it is well distin- 

 guished by its small size and smooth venter. Even more closely related 

 to the still smaller new species, E. gryllus, it is still readily distinguished 

 by its smooth venter and more rugose dorsum, as well as by its song. 



Eleutherodactylus cramptoni, 2 new species 

 Three specimens from the peak of El Yunque, September 30, 1919. 



Diagnostic Characters 



Size small, habitus stout; hind legs short; snout very obtuse, can thus 

 rostralis rounded ; dorsum very rugose with rounded tubercles ; vomerine 



2 Named for Prof. Henry E. Crampton, whose active interest and investigation have 

 greatly furthered the zoological work of the Survey. 



