THE BATRACHIA OF NOETH AMERICA. 



323 



singular incompleteuess of the cranial box seems to mark Tboropa, 

 which has the strong nasal roofing of this second series. 



Chorophiliis exhibits an affinity to the Cystignathidie, as does also 

 Thoropa, which represents in inferiority Eusoi)hns in tlic same iamily. 



The following is the geographical distribution of thegeneraand species: 





R. 

 Austialis. 



Neotropica. 



K. 

 Nearctica. 



R. 



Palifiarctica. 



R. 



^tliiopica. 



R. 



Piil.Totropica. 







1 

 1 



5 



3 



4 



9 



1 



13 



3 



1 



3 



16 



6U 



4 





















OpisthodelplivH 

































































































































H'yla 



29 



2 



10 



3 







3 



Hylella 





1 

 5 















1 

 1 



























^ 





Total 



31 



128 



16 



3 







3 



The only genus in the above series which is not confined to a zoological 

 realm is Hyla, and the species of this genus are all restricted to their 

 respective regions. ISmilisca baudinii extends from the Neotropical into 

 the borders uf the Nearctic region, and it is possible that Hyla ccerulea 

 extends from the Australian Islands into those of the Palaiotropical 

 archipelago, thougli the identification of the species may not be strictly 

 correct. According to Bleeker it is found in Java and as far west as 

 Padang, on the west coast of Sumatra.* 



The following is a distribution of these generic forms among the dis- 

 tricts of the Neotropical region : 





West 

 Indian. 



Mexican. 



1 

 Colombian. Chilian. 



Eastern. 







1 

 1 

 1 



























1 





4 







1 











3 









4 









(1) 



2 





8 









1 







2 

 3 

 1 







11 



Agalycbuis 











Siuilisca 



















1 



Hypsiboas 





2 



17 



1 



i 



7 





15 



Hyla 



2 



1 



36 



Hvlella - 



3 







?1 















1 















Xotal 



7 



31 



13 



1 



80 







Our present knowledge, as above, indicates considerable localization 

 in the distribution of genera, and a marked predominance of the eastern 



"Over de Reptiliea Fauna v^ii Sumatra, P. Bleeker, Batavia, I860, p. 8. 



