SCHMIDT, THE HERPETOLOGY OF PORTO RICO 179 



locality), Tortola, and Vieques. The present records add Culebra and 

 Porto Rico to its range. Since it was discovered at widely distant points 

 in Porto Rico, it probably is indigenous to that island. In San Turce, 

 along the railroad and trolley embankments north of the Hotel Eureka. 

 it is more abundant than Eleutherodactylus auriculatus. 



The single specimen from Culebra agrees closely with the Porto Rican 

 series. In coloration this species is less variable than E. auriculatus, but 

 the median white dorsal line may be present or absent. It is developed 

 in twelve of the present specimens. The usual color is grayish brown, 

 with faint dusky markings, and a sharply defined black canthal line 

 which extends over the ear and a short distance beyond it, outlined above 

 in most cases by a very narrow white line on the canthus extending over 

 the eyelid. The concealed surfaces of the legs are reticulated with black, 

 which affords a fairly good character for distinguishing this species in 

 the field from E. auriculatus. One specimen, Xo. 10001, $ , was violet- 

 red above, with a very heavy black canthal and supra-auricular mark, 

 and with the concealed surfaces of the legs black with sharply defined 

 white spots. When compared directly with E. auriculatus, this species 

 is seen to be distinguished by the much heavier granulation of the venter 

 and the much smaller digital disks, in addition to the difference in pro- 

 portions noted by Stejneger. The measurements of the largest specimens 

 of each sex follow : 



No. 10117 $ No. 10082 9 



Tip of snout to vent 24 mm. 33 mm. 



Tip of snout to posterior border of tympanum 10 " 13 " 



Greatest breadth of head 11 " 14 " 



Foreleg from axilla 16 " 19 " 



Hind leg from vent 38 " 48 " 



Eleutherodactylus brittoni, 8 new species 



Four specimens of this species were collected at Maricao and El 

 Yunque, near the Forester's cabin. 



Diagnostic Characters 



Derived from Eleutherodactylus autillensis, from which it is distin- 

 guished by its small size, its sharp canthus rostralis, which is continued 

 as a dorsolateral angle some distance behind the ear, and its more pos- 

 teriorly placed nostril. 



3 Named for Dr. Nathaniel L. Britton, chairman of the Committee on the Scientific 

 Survey of Porto Rico of the New York Academy of Sciences. 



