286 



BULLETIN 120, UNITED STATES NATIONAL MUSEUM. 



In the tabic which occupies the foregoing pages is given the dis- 

 tribution of each genus and species of host Imown to harbor Opali- 

 nidae. There follows a list of the families and subfamilies of the 

 Anura, Avith a statement of their distribution. 



PIPIDAE the Guianas and northern Brazil, tropical and southern 

 continental Africa (fig. 222). 



Pipinae, the Guianas and northern Brazil. 



Xenopodinae, tropical and southern continental Africa; one fossil 

 torm, Palaeohatrachus, known from the mid-Tertiary of Europe 



