HERPETOLOGY OF PORTO RICO. 



591 



ELEUTHERODACTYLUS ANTILLENSIS « (Reinhardt and Luetken.) 



1863. Hylodes antillenm Reinhardt and Luetken, Vid. Meddel. Naturh. Foren. 

 (Copenhagen ), 1862, p. 209; author's separate, p. 57 (type locality, St. Thomas; 

 type in Mus. Copenh.). 



This species has been placed as a synonym of K. auriculatus by 

 Boulenger, but the two are very different indeed. If individuals of 

 tin- same size are placed side by side the difference in the size of the 

 legs and feet are particularly striking, they being much shorter in 

 E. antillensis. The fore limbs are ('specially minute, so much so that 

 the length from axilla to tip of longest linger is about one-half the 

 length from tip of snout to vent, while in E. auriculatus the corres- 

 ponding length of arm and hand greatly exceeds, often by 33 per cent, 

 half the total length of head and body. As a rule, the heel and elbow 

 of the adpressed limbs barely touch in E. antillensis, while in E. 



FIGS. 20-24.— Eleuthekod act ylus antillensis. 2 x natural size. 20, side of head; 21, top of head; 

 22, inside of mouth; 23, underside of fore foot; 24, underside of hind foot. No. 27075, U.S.N. M. 



auriculatus they overlap considerably. In the latter the heels also 

 overlap when the bent hind limbs are placed vertically to the axis of 

 the body — while in this position the heels of E. antillensis just meet. 

 Notwithstanding the enormous variation in the coloration of E. auric- 

 ulatus, there seems to be some difference in the average color of both 

 species. The larger E. antillensis obtained in Vieques are nearly 

 uniformly pale above, and are therefore closely approximated by 

 the pale specimens of E. auriculatus which we collected in the white 

 limestone hills near Ponce (Nos. 2731^-17), but all the young ones 

 were "dull grayish brown with regular dusky longitudinal markings," 

 thus presenting none of the peculiar patterns so characteristic of the 

 young E. auriculatus and described above under the latter species. 

 Description.— -U. S.N. M. No. 27075, Isabella Segunda, Vieques 



a Ant Hit usis: of, or belonging to, the Antilles. 



