244 ON THE HYMENOPTERA OF THE HAWAIIAN ISLANDS. 



edges projecting, forming a serration broader than long, 

 becoming gradually broader until the sixth is double as 

 wide as long ; last joint (forming a club) longer than the 

 preceding six ; the apex produced laterally, the elongation, 

 forming about one fourth of the total lengthy and half the 

 thickness of the central part ; the club becomes gradually 

 thickened towards the apex. The flagellum is covered 

 with longish stiff hairs, directed towards the apex. Head 

 broad, rather large ; eyes large, converging above ; ocelli 

 in a wide triangle, widely separated, the upper two nearly 

 touching the eyes; occiput concave. Face deeply exca- 

 vated, the excavation reaching laterally to the mouth ; 

 epistoma projecting, broadly keeled. Thorax large^ broad, 

 without sutures ; scutellum large ; metathorax small. 

 Abdomen shorter than the thorax, the apex narrowed, 

 transverse. Wings scarcely so long as the body ; cubitus 

 more than double the length of ulna, which is very short ; 

 radius absent ; edge of wing shortly ciliated. The cubitus 

 does not reach to the middle of the wing. Hind tibiae 

 almost one-spurred, the inner being a mere stump. 



The above-described species is certainly not an Encyrtus 

 as now understood. I cannot make it fit into any of the 

 genera as defined by Mayr and Fcerster; but having only 

 a single example (a male), I do not care to found a new 

 genus for its reception. The sculpture of the head and 

 thorax is pretty much as in Bothriothorax. 



Taken on several of the islands. 



Obs. Mr. Blackburn {antea, p. 199) states that he has 

 taken in the Archipelago over one hundred species of 

 Hymenoptera ; but I am only acquainted with eighty- 

 three (or eighty-four with Apis mellifica). I believe 

 there are two or three un described species in the British 

 Museum, which were sent by Mr. Blackburn some years 

 as-o.— P. C. 



