486 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 54. 



The knowledge of the distribution of host species has been greatly 

 increased since Bulletin 66 was published, and we may therefore pre- 

 sent a revised summary for contract with the list of described 

 species : 



Distribution of host species and descril)ed parasite species according to regions. 



It will be seen from the foregoing table that only half of the 

 recorded parasites are described. About 30 of the undescribed 

 species are in the possession of the author and will furnish material 

 for further studies. The indications are that tropical regions will 

 ultimately yield more species than the temperate regions, which now 

 stand highest because of the more intensive collecting done in them. 



HOST LIST. 



The following additions to the host list may be made : 



HOMOPTERA. 



Superfamily CICADOIDEA. 

 Family CICADELLIDAE (TETIGONIIDAE). 



Tribe CICADELLINI (TETIGONIINI). 



Cicadella Latreille {Tettigoniella Bergroth) : spectra Distant, Cey- 

 lon (E. E. Green, 1912). 



