146 ASHMEAD [ J 4] 



Type. Cat. No. 5756, U. S. Nat. Museum (Ashmead Collection). 

 From Bering Island (Barrett-Hamilton) ; Sitka. 



Family DIAPRIID^. 

 Genus Spilomicrus Westwood. 



SPILOMICRUS ALASKENSIS sp. nov. 



Female. Length i .8 mm. Polished black ; legs black, with the 

 sutures between the coxae and the trochanters, the knees, apices of tibiae 

 and all tarsi, except last joint, honey-yellow, the tibias, except as noted, 

 fuscous. Wings hyaline, the veins brown-black, the marginal vein 

 being fully four times as long as thick, the stigmal vein very short, 

 wider than long, with a delicate fuscous ray from its tip, one part ex- 

 tending backwards as in a Belytid, the other extending forward and 

 forming a very narrow indistinct, but open marginal cell. 



The thorax has the parapsidal furrows complete, each parapside 

 with a large, deep, longitudinal fovea on its disk, the scutellum with a 

 large fovea at its base, not divided by a median carina, while the meta- 

 thorax has a distinct median carina. 



The abdomen is conic-ovate, pointed at apex and highly polished, 

 with the petiole opaque and only a little longer than thick. 



Type. Cat. No. 552 1 , U. S. Nat. Museum. From Muir Inlet, June 

 1 2 (Fur Seal Commision) . One specimen. 



This species differs from all others in our fauna by the simple basal 

 scutellar fovea, by the deeply foveate parapsides, by venation and by 

 the color of the legs. 



Family CERAPHRONID^E. 



Subfamily MEGASPILIN^E. 



Genus Lygocerus Forster. 

 LYGOCERUS ALASKENSIS sp. nov. 



Female. Length 2 mm. Black and shining, not sculptured ; palpi 

 brownish ; mandibles dark rufo-piceous ; antenna entirely black, except 

 a faint yellowish tinge at the extreme apex of the pedicel, legs black, 

 with the knees, tibias, except medially, and the tarsi except the last joint, 

 dark honey-yellow, the tibiae medially more or less fuscous, the claws 

 black ; tegula? piceous. Wings hyaline, the large stigma, the costa and 

 the stigmal vein being reddish-brown. 



