THE BATRACIIIA of NORTH AMERICA. 



315 



regarded as id ntical with the G. dorsata by Giiufclier ^Aim. Mag. IsTat. 

 Hist., 1S5!), PI. xvj. 



Cystignathi, 

 39 sp. 



Pseudes, 

 7 sp. 



Frontopai'iotal bones developed. 



An osseous xiphisternal style. 

 ( Telmatobius 



j Cystignathus Bubonias 



I Leptodactylus Edalorhina 

 [ Paludicola 



Xlpbistcrnnm a cartilaginoua disk. 



Hylodes, 1 \ ""^ LySpsua 



oJ sp. I \ Mixopbyes 



[ \ Cycloihampbus 



r 



Ceratopbrydea, 

 17 sp. 



Plenrodcma;, 

 9ap. 



Criniffl, 

 25 sp. 



I 



Frontoparietal bones undeveloped, embraci 

 a fontanelle. 

 Xipbisternum with an osseous style. 

 <; Pleurodema Hylorbi 



i Liuperus \ 



Xipbisternum a cartilaginous plate. 



Limnocharia 

 Hylodes 

 Litbodytes 

 Enhydrobius 

 EpirLiexis 

 Syrrbopbus 

 Maiachylodea 



Ceratopbrys 



Stouibus 



Ubiroleptes 



Zaobffiuna 



Odontopbrynua'' 



loporus 



Copbseua 

 Alaodes 



Borboroctetes 



Crinia 



Hyperolia 



Frontoparietals and etiimoidarcb undeveloped. 

 Eusopbus 



LITHODYTES Cope. 



Proceed. Ac. Phila., 1862, p. 153; Jouru. Ac. Phila. (2), vi, p., 97. 

 Hylodes pars, auctoriim. 



Termiual phalanges T-shaped ; flugers and toes free; no enlarged 

 metatarsal tubercle. Oinosternmn cartilaginous. Sternum a cartilagi- 

 nous plate. Prefrontal bones uniting on the median line of the muzzle. 

 Belly smooth. 



This genus differs from Hylodes only in the smooth, as distinguished 

 from the granular, or areolated, bellj" of the latter. Its species are nu- 

 merous and inhabit principally the equatorial and northern parts of 

 the ISTeotropical realm. But two are found in the United States: the 

 L. latrans at the southwestern border, aud the i, r/cor(7ii at the extreme 

 southeast. The latter is a West Indian species; the former probably 

 occurs in Mexico, but its existence there has not yet been ascertained 

 positivel3^ 



a. Vomerine ia two short patches between the uares. 



Form robust ; muzzle short, wide ; upper surfaces with brown spots L. latrans. 



aa. Vomerine teeth in two long transverse curved series posterior to the internal 

 uares. 

 Form elongate ; muzzle acute ; spotted above L. ricordii. 



