NO. 1448. NEW JAPANESE HYMENOPTERA—ASHMEAD. 183 



The second and third dorsal segments of the abdomen have a transverse 

 depression or furrow at the middle. 



Type.— C2it. No. 7251, U.S.N.M. 



Locality. — Sapporo (Dr. S. Matsumura). One specimen, No. 24. 



Genus ASTHENARA Forster. 

 ASTHENARA RUFOCINCTA, new species. 



Male. — Length %.% mm. Black and shining, with the second and 

 third segments of the abdomen red; the cheeks, front orbits, and a 

 spot back of eyes, a spot on each side of the middle mesothoracic lobe 

 anteriorly, a line on the lateral margin of the lateral lobes in front of 

 the teguhv, a line beneath the tegula?, the front trochanters in part 

 and the base of the front femora, the middle trochanters, the apex of 

 middle and the sutures of the hind trochanters are white; the front 

 and middle tibia? and tarsi yellowish; rest of the legs black; the hind 

 legs, except the tibial spurs and the sutures of the trochanters, wholly 

 black. Wings hyaline, or only faintly tinged, the stigma and veins 

 brown. 



Type.—C^t. No. 7252, U.S.N.M. 



Locality. — Sapporo (Dr. S, Matsumura). One specimen, No. 34. 



Tribe V. BASSINI. 



Genus BASSUS Gravenhorst. 

 BASSUS JAPONICUS, new species. 



Female. — Length 4.5 mm. Black and shining, but punctate; the 

 palpi, mandibles, clypeus, face, inner orbits, scape and pedicel beneath, 

 front margins of the lateral lobes of the mesonotum, scutellum, a trans- 

 verse line on the ridge at base of the metanotum, the teg'ulse, a spot 

 beneath, the epitegulse, the origin of veins at base of the wings, the 

 front and middle legs, apex of hind coxa? and trochanters and two- 

 thirds of the hind tibia?, except an annulus at base, are white or yel- 

 lowish-white, the rest of the legs being- black, except the front and 

 middle femora and tibite, which are tinged with red; the extreme apical 

 margins of dorsal abdominal segments 5, 6, and 7 are whitish; flagel- 

 lum black brownish at base beneath. Wings hyaline, the costal veins 

 and stigma blackish, the internal veins brown. 



Tyjje.—Q^^t. No. 7253, U.S.N.M. 



Locality . —i>a,i)poro (Dr. S. Matsumura). Two specimens, No. 40. 



Genus SYRPHOCTONUS Forster. 

 SYRPHOCTONUS ATAMIENSIS, new species. 



Male. — Length about 5 mm. Black; clypeus, a quadrate spot above, 

 a triangular spot on inner orbits below the middle of the e^^es, scape 

 and pedicel of antenna^ and front coxa? and trochanters yellowish-white. 



Locality. — Atami (A. Koebele). 



