HYMEXOPTERA 655 



Blepvrus Howard. 



(i) Blepyrus marsdeni How. 



Blepynis ynarsdeni Howard, Proc. U.S. Nat. Mus. xxi. (1898), p. 234. 



This is a very abundant species throughout the islands and I do not feel certain 

 that it is not synonymous with Eiicyrhis nisnlarts Cam. described on a single $. It 

 would appear that if B. insularis is distinct from the above, it must now have become 

 extinct, for it was found by Blackburn on several islands and, being no doubt a parasite 

 of scale insects, could hardly have failed to have been bred by myself, Koebele or 

 others, if it still existed. 



MiCROTERYs Thom. 



(i) Alicroterys flavus Howard. 

 Hab. Common throughout the islands, on introduced scale-insects. 



Aphidenxvrtus Ashm, 

 ( I ) Aphidencyrhis ? sp. ? 

 Hab. Oahu ; a common parasite of some imported Aphides. 



Helegonatopus Perk. 

 ( I ) Helegonatopus, sp. .'* 

 Hab. Oahu ; parasitic on Eclithrodelphax and other Dryinidae. 

 Obs. Several other minute and obscure Mirine Encyrtids, all no doubt imported, 

 have been collected, but not yet determined. 



Fam. PTEROMALIDAE. 



It is almost certain that this vast family is unrepresented in the islands by endemic 

 forms, excepting possibly by a few species of the subf Spalangiinae. Several introduced 

 species have been found and, as some of them are spreading, they will no doubt become 

 ubiquitous. Species of the genus Pteronialus have been imported for economic reasons. 

 Most conspicuous of the Pteromalidae, that are foreign, are two or three species 

 belonging to the subf Sphegigasterinae. 



Subfam. SPHEGIGASTERINAE. 

 Tomocera How. 



(i) Tomocera ceroplastis Perk. 

 Tomocera ceroplastis Perk., Proc. Hawaii Ent. Soc. i. p. 76. 

 Hab. Oahu ; introduced. 



