70 PROCEEDINGS OF THE NATIONAL MUSEUM vol.79 



slightly longer than Fl, Fl a fourth longer than F2, funiculars 2 to 

 5 subequal, becoming more robust from 2 to 5, the second slightly 

 longer than thick, the fifth as broad as long and subquadrate, club 

 at greatest width as broad as F5 and a little longer than F4 and F5 

 combined, antennae as a whole rather stout and densely hairy; pro- 

 notum one-fifth narrower than head, and about one-tenth narrower 

 than mesonotum, these nota moderately and not deeply umbilicated ; 

 anterior lateral half of mesopleura feebly, posterior half more 

 coarsely, aciculate, both finely and rather sparsely punctate ; 11 or 12 

 setae on submarginal vein, hairs widely spaced; propodeum coarsely 

 and irregularly netted, groove polished, fairly deep and broad, 

 bottom rounded and crossed by several diagonal unevenly spaced 

 rugae, groove ended in front by an arcuate carina; anterior lateral 

 half of abdomen mostly smooth, polished, but posterior portions in 

 part inconspicuously and minutely granulose, particularly on pos- 

 terior parts of the segments, abdomen practically bare, except area 

 along ovipositor sheath, which is hairy and finely punctate. 



Male. — Unknown. 



Type locality. — Bluffton, Ohio. 



Ty/^e.— Female, U.S.N.M. No. 42245. 



Remark's. — Known from four females collected by Dr. L. L. Huber. 

 Two were taken at Flint, near Columbus, Ohio, August 15, 1921, and 

 two were reared at the type locality, August 29, 1921, from galls of 

 Cynipg pezomachoides Osten Sacken (determined Huber), prob- 

 ably var. erinacei (Beutenmueller). on Quercus alba. Three para- 

 types are in the writer's collection. 



28. DECATOMA POMIFORMIS, new species 



Plate 2, Figtire 24 



Perhaps nearest to D. suhimmaculata Girault, from which it maybe 

 distinguished by characters in the key; furthermore, the head is 

 somewhat broader, and the body is on the average a little longer in 

 the present species. 



Female. — Length 3.5 to 3.8 mm., fairly robust, colors yellow and 

 black; head golden yellow, oral region faintly brown, occiput rather 

 broadly black, and vertex with a subquadrate black patch not reach- 

 ing beyond ocelli behind and on the sides, extending to and narrow- 

 ing toward antennal scrobe; scape a shade lighter than fnce, pedicel 

 brown above, darker on basal two-thirds, ring joint dull yellow, 

 flagellum chestnut-brown ; black of neck sometimes extending caudad 

 as a band more or less upon meson of pronotum but never more than 

 halfway to iiind margin, pronotum otherwise concolorous with head; 

 mesonotum often showing black tlirough middle third of pronotum 



