HERPETOLOGY OF PORTO RICO. 583 



which Dunieril unci liibroii pul)li.sli('d in Is-il :is having- l)t'en g-jven 

 previously by thcni to IF. niartinicensls in manuscript, and tiic two 

 names given ))y Fitzinger in 1843 to JL ricordtl and //. l!ne(itn>i. The 

 proper interpretation seems to l)e to regard KI('iith<r<)d<i<iijhis as a 

 substitute name, especially when compared witli Dunit'ril and l)il)r()n's 

 not(> concerning L<'pfhyJn on a previous page," and it is here adopted 

 accordingly. 



Elei(,theTodactyl((s is a genus characteristic of tropical America, and 

 comprises a large number of species often dithcult to distinguish. In 

 man}" respects they resemljle the true tree toads, though structurally 

 they are nearer the frog-like Lejjtodactiilu^. 



Numerous species occur in the Antillean islands, live being found in 

 Porto Kico and dependent islands. 



KEY TO THE SPECIES OF ELEUTnERODACTVIA'S IN PORTO RICO. 



a ^ Belly granular; vomerine teeth in two short straiglit series not extending laterally 

 1 K>yond the choante ( fig. 17). 

 I) ' Nostrils much nearer tiji (jf snout tlian eye (tig. 15). 



'•1 Hind leg averages about one-half more than total U'ngth of head and body. 



E. auriculaiK.s, p. o8o. 

 c^ Hind leg averages about one-tliird more than total length of head and body. 



E. antillensis, ]). 591. 



// ^ Nostrils lialfway between tip of snout and eye (fig. o5) E. unicolor, p. 597. 



a ^ J>elly smooth; vomerine teeth in two long angular series extending laterally 

 beyond the choamie (fig. 27). 

 h ' Distance of vomerine teeth from choanae less than diameter of choanse (fig. 32) ; 

 soles of feet tubercular; hind foot nearly as long as fore leg; color of back 



and sides pale, spotted with blackish E. monensis, p. 595. 



b ■^ Distance of vomerine teeth from choante nearly twice the diameter of the 

 choaiife (fig. 27); soles of feet perfectly smooth ; hind foot longer than fore 

 leg; color above uniform l)rown with a pale longitudinal band on each side 

 of back, sides blackish E. rk-kmondi, p. 593. 



ELEUTHERODACTYLUS AURICULATUS '' (Cope). 



1862. Jljjlodes auricakdus Cope, Proc. Phila. Acad., 1862, }>. 152 (type locality. 

 Eastern Cuba; type No. 5207 U.S.N.M.).— P.oulex(;er, Cat. Batr. Sal. 

 Brit. Mus., 1882, p. 214 (Santo Domingo). 



1876. HijlodcH riKirtinicensis Peters, Mon. Ber. Berlin Akad. Wiss., 1876, p. 709, 

 pi. I (Porto Rico) (not of Tschudi). — GuxnLAcii, Anal. Soc. Espan. 

 Hist. Nat., X, 1881, p. 315 (Porto Rico). — SrAiiL, Fauna Puerto-Rico, 

 1882, pp. 71, 161 (Porto Rico).— Garmax, Bull. Essex Inst., XIX, 1887, 

 p. 13 (part: Bayamon, Porto Rico). — -Boettger, Kat. Batr. Mus. Senck- 

 enberg., 1892, p. 29 (Porto Rico). 



The identity of the tree toad of Porto Kico has been a matter of 

 great uncertainty. Peters, who compared Porto Rican specimens 

 with the type of lf(/lodc.s in(it'f!)i!censix from Martinique, declares 

 them to be identical; and Garman, who also had ])efore liim specimens 

 from both localities, came to the same result. 



«Erpet. Gen., VIII, ]>. 504. ^ Auriculaius=y^'\th. small ears. 



