166 Journal New York Entomological Society. tVoi. xxiii. 



I. Merisus octoguttata new species. Female. Genotype. 



Differs from Merisus flaviventris in having the antennae all black, one 

 mandible but three-dentate (other not seen), the femora are dusky and the 

 abdomen bears the following black markings : A narrow, marginal stripe from 

 base to base of distal sixth where its end turns mesad shortly ; and five pairs 

 of discal spots (five in a line longitudinally on each side of the meson), the 

 first pair dots, the second pair semicircular, the third and fourth largest, 

 oblique, subpyriform ; the fifth farther laterad, connected with the mar- 

 ginal stripe just proximad of its end ; the first is at the apex of segment two 

 or well out from the base. Hind coxse yellowish brown. Clypeus striate 

 longitudinally, the face with scattered silvery pubescence. Propodeum with 

 a fovea at cephalic margin toward the spiracle. 



From one female taken by sweeping grass, Chevy Chase Lake, 

 Maryland, April 24, 191 5. 



Type. — Catalogue No. 19396, U. S. N. M., the female on a tag, 

 the head and a hind tibia on a slide. 



Genus TAFTIA Ashmead. 



The club is solid, the fore wings embrowned but hyaline caudad 

 of the proximal half of the submarginal vein. Head rounded, the 

 face inflexed. Mandibles acute. The dorsal body may be washed 

 more or less with metallic purple. Brown. Middle tibial spur short. 

 Costal cell of the fore wing broad. A female in the U. S. N. M. on 

 a slide labelled " No. 18 From Pscudococcus citri on Bamboo, Manila, 

 P. I., Calif. State Insectary." Compared with types. This specimen 

 bore two black, long, clavate appendages on the face mesad below 

 the middle. I could not find these organs on the types and presuine 

 they have been broken off. 



MIRASTYMACHUS new genus of the Ectromini. 

 I. Mirastymachus europaeus new species. Genotype. 



Female.- — Length, i.oo mm. 



Differs from the genotype of Astymachus in having the ovipositor much 

 shorter and nonexserted, the antennal club black, also funicles one to three 

 (only funicle one in the named species), the fore wings do not have a round 

 black spot over the marginal vein as in the named species, the club is dis- 

 tinctly three-jointed. The ovipositor is shorter, as in Xanthoencyrtus, the 

 scape compressed but not dilated. Form as in Xanthoencyrtus. The post- 

 marginal vein is present but short. 



The male bears nine-jointed antennae like the male of the named species 

 but the joints of the funicle are all much longer, the solid club still longer, 



