HKRPETOLOGY OF PORTO RICO. 



597 



the back about five scries of smaller spots, which seem to have a ten- 

 dency to coalesce crosswise; limbs with no indication of cross hands, 

 but irregularly and indistinctly marbled with dusky; underside whitish, 

 unspotted. 



U< marks. 1 have examined the types of this species in the Hamburg 

 Museum and found them to agree substantially with the above 

 description. 



Habitat. — Thus far this species has only been found on Mona Island 

 and is probably confined to it. The types were collected by Mr. Bock 

 in 1892. Mr. Bowdish only obtained one specimen. 



List of specimens of Eleviherodactylus monensis. 



ELEUTHERODACTYLUS UNICOLOR," new species. 



Diagnosis. — Toes free without a vestige of web; belly granular; 

 tympanum distinct, one-third the diameter of eye; vomerine teeth in 



37 



Pigs.35-39. — Ei.EHTiiERODACTYi.es unicolor. 35, side of head; 36, top of head; 37, inside of mouth; 2 

 ■ natural size. 38, underside of fore foot; 39, underside of hind foot. 2| x natural size. No.26963, 



C.s.X.M. 



two short, straight series, not extending beyond the inner nares; head 

 not broader than body; interorbital space equals upper eyelid; upper 

 surface smooth; second linger longer than first; inner metatarsal 

 tubercle large; digital disks small; nostrils intermediate between eye 

 and tip of snout; hind limbs not cross barred. 



Habitat. — Porto Rico. 



Type.— Cat. No. 26963, U.S.N.M.; Camp El Yunque Mountain, 

 2,978 feet altitude; L. Stejneger, collector, February 26, 1900. 



Description of type. — U.S.N.M. No. 26963; Camp El Yunque, 

 Porto Rico, 2,978 feet altitude; February 26, 1900; L. Stejneger, collec- 

 tor. Tongue medium, oval, entire behind; vomerine teeth in two short 

 straight series behind the choanse, but not extending laterally beyond 

 them, widely separated in the middle; snout declining rapidly from the 



«Of one color. 



