200 ON THE FAMILIES OF THE RANIFORM ANURA. 



• 



their physiognom}^, but not distinguished hitherto by any essential characters. Some 

 of these have received names and been regarded as genera, without any valid charac- 

 ters being adduced, and having in many cases a very inaccurate coincidence with the 

 trenchant series of nature. In this catalogue come Hypsihoas, Auhtris, Eyas of 

 Wagler; Lopliopns Tschudi; Litoria Dumeril, Bibron ; Pelodryas Giinther ; and 

 Gentrotelma and Hylomedusa Burmeister, with others. 



The species of Hyla, as above defined, appear to be referable to five genera, as 

 follows : 



I. Pollex a simple metacarpus. 

 Tongue short, entirely attached ; inferior palpebra latticed with fibres; 

 vomerine teeth in series posteriorly longitudinal, anteriorly in- 

 curved, Gentrotelma. 



Tongue attached, to one-third free; inferior palpebra transparent; 

 vomerine teeth in fasciculi, or short series, which are transverse 

 or convergent posteriorly, ....... Hyla. 



IT. Pollex a metacarpus with supplementary phalanges. 

 Phalanges of pollex forming a solid elongate claw; vomerine teeth in 

 series longitudinal posteriorly, anteriorly incurved ; feet palmate; 

 lower palpebra opake with fibres, ..... Cinclidium. 



Phalanges of pollex forming a solid curved elongate claw ; vomerine 

 teeth in series longitudinal posteriorly, incurved anteriorly ; feet 

 largely palmate ; palpebi'a transparent, ..... Hypsiboas. 



Phalanges of pollex two, distinct, short, obtuse, longitudinal ; vomerine 

 teeth in short transverse series; toes largely palmate; palpebra 

 transparent, ... ...... Calamita. 



The genus Hyla, as above defined, still includes Litoria D. B. and of other authors, 

 as no character has yet been discovered distinguishing it trenchantly, and its-species 

 are, for the writer, only indicative of a modification within the genus toward which 

 several other species tend. The character of the opposition of the inner digit to the 

 others is, as Steindachner well observes, of little value, and seldom of more than 

 specific value. 



The species referable to the above genera are as follows : 



Cinclidium granulatum Cope, sp. nov. Probably 

 Hyla langsdoi'ffii Burmeister, Erlaiit. Naturg. Bra?. 

 Surinam. fH. la n gs d o r f f ii is an Osteocephalus 

 Fitz.) 

 Hypsiboas albomarginatus Spix. Brazil, 

 levaillantii D. B. Cayenne. 

 1 e p r i e u r i i D. B. Cayenne. 

 X e r p h y 1 1 u ra D. B. Cayenne. 



Hypsiboas p a r d a 1 is Spix. Brazil, 

 pal mat us Latr. Brazil. 

 1 un d ii Burm. Brazil, 

 pugnax Schm. Costa Rica, 

 calcaratus Troscli. Ecuador, Guiana, 

 spectrum Reinhardt. Brazil, 

 ciroumdatus Cope, sp. n. Brazil, 

 cinerascens Spix. Brazil. 



