36 PROCEEDINGS OF THE NATIONAL MUSEUM vol.66 



large transverse impression ending vertically below the eye. Thorax 

 brown with smooth, silky gray pollen and tAvo narrow brown stripes 

 near middle. Chaetotaxj'^ : Acrostichals, 1 next to scutellum ; dorso- 

 centrals, 3 anterior, 4 posterior; intraalar 1, supraalar 1; postalaar 

 2; humeral 1 or 2; prescutellar 1; notopleural 2; scutellum with 2 

 lateral, 1 apical of same size, 1 discal; sternopleural 2. Calypters 

 whitish. 



Abdomen yellow in ground color, with thin gray pollen; seg- 

 ments 1-3 with narrow posterior dark band and a dark middle line 

 of same width. First segment without marginal bristles; second 

 with a small median pair; third with marginal row of about 12, 

 not large. Genital segments yellow, small, hairy; inner forceps 

 united into a small slender yellow process curving forward, blunt at 

 tip; outer forceps yellow, slender, as large and long as the 

 combined inner ones. Fifth sternite with broad yellow lobes, sepa- 

 rated by a broad V-shaped incision. 



Legs yellow; tips of hind femora infuscated and all the tibiae 

 with faint dark reflections in certain lights. Claws long and pul- 

 villi nearly equal to last tarsal joint. Wings subhyaline, third vein 

 with two or three hairs at base. 



Length, 6 to 7 mm. 



Female. — Front considerably wider than front ocellus; as the 

 only specimen is somewhat shriveled, the front may normally be 

 almost as wide as the ocellar triangle. Claws long for a female, 

 but not so long as in the male ; pulvilli rounded, more than half as 

 long as last tarsal joint. 'Wliether any sort of piercing larvipositor 

 is present is not clear; the organs have been unsuccessfully pulled 

 apart. There may be a minute piercer, but in any event smaller 

 than the very distinct one of EutHxa exilis and not comparable 

 Vv ith the large one of jonesi. 



Length, 6 mm. 



Five males and six females, reared at the Japanese beetle labora- 

 tory from adults of the so-called Japanese beetle, Popillia japonica 

 Newman ; the infested beetles were obtained in Japan. 



Type.— Male, Cat. No. 26846, U.S.N.M. 



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