June, 1904.] ASHMEAD : HyMENOPTERA FROM JaPAN. 09 



Family LIV, DIAPRIID.^. 



Subfamily I, Spilomicrin.e. 



Genus SPILOMICRUS Westwood. 



Spilomicrus japonicus, new species. 



Male. — Length, 3.6 mm. Polished black, the prothorax at sides belozu and the 

 lower part of the mesopleura striated, the metathorax rugulose, the abdominal petiole 

 long, longitudinally furrowed ; antennae longer than the body, reddish-brown, pubes- 

 cent, the flagellar joints all long, cylindrical, except the first joint which is hardly 

 one fourth the length of the second ; the second joint is about seven times as long as 

 thick, with an emargination beneath at basal fourth. Wings hyaline, faintly tinted, 

 the marginal vein and the short radius brown-black, the former being about four times 

 as long as thick, the radius hardly half its length, with a ray or short fuscous branch 

 from its tip, obliquely directed inwardly, nearly parallel with the basal nervure. Under 

 a strong lens one may also detect a delicate fuscous ray from the tip of the radius, 

 directed" outwardly and forming a long, narrow marginal cell. 



Type. — No. 7116, U. S. National Museum. 

 Sapporo (Dr. Matsunuira). 



Subfamily II, Diapriin.e. 

 Genus DIAPRIA Latreille. 



Diapria mitsukurii, new species. 



Female. — Length, 2 mm. Polished black, impunctate, the cheeks posteriorly, 

 the collar at the sides, the metathorax and the petiole clothed with a glittering white 

 pubescence, denser on the cheeks and collar ; head subglobose ; legs, including 

 coxK, brownish-yellow ; antennce l2-jointed, ending in a 5-jointed club but which is 

 not abruptly defined, the club-joints gradually enlarging from the first, which is only 

 about twice as thick as the last funicle joint ; the antennae, except the club, are honey- 

 yellow, the club black; the pedicel is as long as the first funicle joint but much 

 thicker; the funicle is 5-jointed, the joints gradually decreasing in size, the last 

 being hardly twice as long as thick at apex ; the scutellum has a rather large, trans- 

 verse fovea at base ; the metathorax has a sharp median ridge at base which, when 

 seen from the side, is triangular ; abdomen pointed ovate, highly polished, the petiole 

 alone sculptured or striate ; the petiole is fully twice as long as thick and so densely 

 clothed with a whitish pubescence that its sculpture is obscured. 



Male. — Differs from female in having the antennce long, 14-jointed, the flagellar 

 joints ellipsoidal, subpetiolate, with long hairs, the second being shorter than the 

 first, dentate beneath. 



Tvpe. — No. 7117, U. S. National Museum. 



Gifu (Dr. Mitsukuri). 



