HYMENOP TERA 6 ; i 



J' 



distinct species. E. niger Ashm., xanthopus Ashm., and molokaiaisis seem all to be 

 very easily distinguished and have not again been met with. E. hawaiiensis Ashm., 

 and E. flavipes Cam. could hardly be recognized without inspection of the type, with 

 any certainty, and the same might be said of E. vulgaris Ashm. I have made no 

 attempt to include these in my tables, in fact it could not possibly be done, since 

 characters of essential importance are not mentioned in the descriptions. As far as 

 Ashmead's "table" is concerned, I may say that examples bred from such distinct 

 hosts as bees of the genus Prosopis, cocoons of Chrysopidae, eggs of Orthoptera, etc. 

 (each of the parasites, bred from these, forming a distinct species) would run down to 

 E. flavipes Cam. 



One may doubt whether all the Hawaiian species rightly belong to one genus, but 

 at present until the genera of Eupelmine Encyrtids are thoroughly revised I do not 

 -^are to detach any from the genus Eupclnuis. The impossibility of the use of the hairs 

 on the eyes for generic separation is obvious on examination of the Hawaiian forms, 

 since all conditions between conspicuously hairy eyes, and those on which only a few 

 hairs can be detected with difficulty, under high powers of the microscope, are to be 

 found. 



Unfortunately the males cannot be associated with their females except by breeding, 

 and they are likely to prove more difficult to separate than the latter. All the males 

 I have bredi rhat belong to females with almost entirely yellow legs, have the legs dark. 

 Ashmead, however, refers the males with dark legs to similarly coloured females, males 

 with pale legs to females so coloured, and his determinations are certain to prove 

 erroneous in many of these cases. 



Of course not too much stress can be laid on the metallic colouration of the head, 

 thorax, etc. in determining species, yet in some cases this colouration is very fairly 

 constant. The dichotomojs table, which I have made, not without considerable trouble, 

 would probably fail anyone aLtempting to name isolated species, but will I believe prove 

 to be of considerable assistance to the worker, after he has given a good deal of time to 

 the preliminary study of a fairly representative collection. To see the characters 

 properly it is necessary to relax and manipulate all the specimens, so that the parts are 

 well exposed for examination. 



Synopsis of species (females). 



Wings smoky black, white for a short distance basally, scape of antennae 

 distinctly dilated (apical joint of maxillary palpi dark) i. 



Wings uniformly hyaline, at most faintly yellow-tinged or infuscate ; scape 

 simple 2. 



1. Hind tarsi with_ the two apical and (excepting the base and apex) the two 



basal joints dark above setiger. 



Hind tarsi with a band on the basal joint, and the apical joint black subseiiger. 



2. Palpi pale 3- 



Palpi dark i/ 



