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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 106 



two species of amphibians; Walchia sp. on two species of mam- 

 mals; and Tromhicula on three species of reptiles, four species 

 of birds, and ten species of mammals. Species of Tromhicula 



Table 1. — Distribution of chiggers, all species, on vertebrate hosts collcctcil 

 in the Duke Forest area, September 1947 to December 19i9 



included T. alfreddugesi, Tromhicula near akamushi, T. splen- 

 dens, T. ivhartoni, Tromhicula spp., and two new species {T. 

 carterae Brennan and Wharton, 1950, and T. farrelli Brennan 

 and Wharton, 1950). The new genus was found on two species 

 of mammals. 



Collections of unattached chiggers and postlarval stages of 

 trombiculids during the 30 months from October 1947 to March 

 1950. in the Duke Forest area are listed in table 5. There were 



I 



