A LIST OF COCCIDAE AFFECTING VARIOUS 

 GENERA OF PLANTS. 



By E. Ernest Green, F.E.S., F.Z.S. 



For several years I have been collecting records of the Coccidae 

 that infest different genera of plants, extracted — jjartly from my own 

 collections and observations, and partly from existing publications and 

 periodical literature. Mrs Fernald's Catalogue of ihe Coccidae of the 

 World has, naturally, provided the foundation for such an undertaking, 

 and Lindinger's Die Scliildlause has afforded many additional records, 

 as have also the supplementary catalogues issued by the U.S. Bureau of 

 Entomology. Other papers that have been laid under contribution are 

 too numerous to mention. 



The names are entered just as they are published. The compiler 

 does not hold himself responsible for the accuracy of the determinations. 



I have found this list so usefid, and such a time-saving device in my 

 own work, that I propose to publish it, in parts, in the hope that it may 

 prove equally useful to others engaged in similar work. When a Coccid 

 is sent in for determination, a reference to my list immediately shows 

 what species of that particular genus have been recorded from the plant 

 in question. It is surprising how often this has provided a clue to the 

 identity of the species under consideration. The Hst, it must be acknow- 

 ledged, is far from complete and — from its nature — must remain so. 

 Fresh records will be constantly occurring, necessitating further additions. 

 But, with this as a foundation, it should not be difficult for individual 

 students to keep the list up to date for themselves. 



I have not attempted to keep records for individual species of 

 plants. Nor do I consider that such an amplification of detail would 

 repay the labour entailed. As a matter of fact, it will be found that 

 few species of Coccidae are restricted to a single species of plant, though 

 many of them have a distinct preference for particular genera. A list 

 of the Coccidae found in the nests of, or associated with ants, is 

 included. 



