THE BATRACHIA OF NORTH AMERICA. 



393 



It will be readily seeu by the follow iug table that the geographical 

 distribation of this family is almost entirely in the Old World: 





Kealms. 





Austra- 

 lian. 



Neotrop- 

 ical. 



Nearctic. 



Ethiopian. 



PalEearctic. 



Palseotrop- 

 ical. 















1 















2 







2 



4 - 

 5 



1 





















































11 

 2 



8 

 22 



7 























































2 









7 













2 











3 

 34 









2 





13 



11 



49 





4 





Khacophorus 







5 





25 



Micrixalus 











5 











3 

















20 















3 

















Total 



4 



16 



13 



95 



11 



111 







The only genus of the Nearctic fauna is, then, Eana. 



RANA Linn. 



Systema Naturae X, p. 354, pars; Wagler Sj'st. Amph., 1830, p. 203; Giintli., 

 Cat. Batr. Sal., p. 8; Cope, Nat. Hist. Rev., 1855, p. 117. 



Hylarana Tschndi, I. c, p. 78; Giinth., I. c, p. 71; ; Cope, I. c. 



Polypedates, sp., Tscliudi, I. c, p. 73; Guuth., I. c, p. 77. 



Strongylopus Tschudi, I. c, p. 79. 



Fyxicephalus Tscuhndi, I. c, p. 83; Cope, I. c. 



Pyxicephalus, sp., Dum. & Bibi., I. c, p. 442. 



Linnodytes Dura & Bibr., 1. c. , 510. 



Pelophylax Fitzing. Syst., Rept., i., p. 31, 



Tomopterma (Bibr.) Giiutli., I. c, p. 7. 



Sphcerotheca Giinth., I. c, p. 20. 



Dicroglossus Etliu. Proceed. Zool. Soc, 1860, p. 158. 



Hoplohatrachus Peters Mon. Berl. Ac., 1863, p. 449;' Cope, I. c. 



rachylatraclivs (non Keferstein), Mivart, Proc. Zool. Soc, 1868, p. 559. 



Clinotarsus Mivart, ihid., 1869, p. 227. 



Maltzania Bcettger, Abhaudl. Senck. Ges., xii, 1881, p. 417. 



Omosternum with osseous style 5 no frontoparietal fontanelle; eth- 

 moid bone ossified above ; vestibule of the ear functional ; Eustachian 

 tubes open; vomerine teeth present; tongue with two posterior cornua; 

 fingers free; toes webbed ; ossification of skull not penetrating the skin, 

 which is therefore free. 



This genus contains, according to the latest enumeration (that of 

 Mr. Boulenger,) one hundred and eight species, which belong mostly to 

 the Old World. The family of Eauidse, indeed, is only represented in 

 the Western Hemisphere by four other genera, of the Neotropical realm, 



