158 Journal New York Entomological Society. [Voi. xii. 



Tribe II, Pachyn'EURINI. 

 Genus PACHYNEURA Walker. 



Pachyneura nawai, new species. 



9 . Length, 1. 5-1. 8 mm. Head and thorax dull bronzed green, finely sculp- 

 tured ; abdomen metallic black ; legs, except the coxa, testaceous, the tibije and 

 tarsi pale yellowish ; wings hyaline, the veins brown, the marginal vein about four 

 times as long as thick. 



Type. — No. 716S, U. S. National Museum. 



Gifu (Mr! Y. Nawa) ; Atami (Mr. A. Koebele). Bred from an 

 unknown Aphis. 



Pachyneura mitsukurii, new species. 



9. Length, 1.4 mm. Head and thorax bluish-green, sculptured ; abdomen 

 ovate, eeneous ; scape of antenna; and the legs pale or yellowish-white, the flagellum 

 brown ; wings hyaline, the veins brown, the marginal vein about thrice as long as 

 thick. 



Type. — No. 7188, U. S. National Museum. 



Japan. Four specimens received from Dr. Mitsukuri. The 

 specimens are mounted on cardboard and I cannot see the color of 

 the coxae ; they are probably metallic. 



Pachyneuron gifuensis, new species. 



9 . Length, l mm. Head and thorax Kneous black ; antenna; brown ; coxae 

 black, the femora dark brown, the tips and the tibije and tarsi yellowish-white ; wings 

 hyaline, the veins brown, the marginal vein thrice as long as thick. 



Type. — No. 7190, U. S. National Museum. 



Gifu. Described from three specimens bred by Mr. Y. Nawa from 



an Aphis. 



Tribe III, Sphegigasterini. 



Genus ACROCLISIS Forster. 



Acroclisis coccidivora, new species. 



9. Length, 1.4 mm. ^Lneous-black, the head and thorax finely sculptured ; 

 antennae brown, the scape yellowish ; legs, except coxae, honey-yellow, the knees, 

 tips of tibia; and the tarsi, whitish ; wings hyaline, the veins light brownish, the stig- 

 mal vein a little shorter than the marginal. 



Type. — No. 7191, U. S. National Museum. 



Japan (exact locality not given). Described from five specimens, 

 labelled No. 126, bred by A. Koebele from a Coccid. 



Genus TRIGONOGASTRA Ashmead. 

 Trigonogastra hakonensis, new species. (PI. VIII, Fig. 3.) 



9. Length, 1.5 mm. Head and thorax bronze green, finely sculptured ; ab- 

 domen aeneous petiolated, the body triangular, much as in Peri/avipus ; antennre 



