204 WILLIAM H. ASHMEAD. 



In the % tlie body is mostly yellow, with the stemmaticutii. a spot on occiput, 

 sutures surrounding scutellum, metanotuni above, the dorsum of first abdominal 

 segment, the second, except at apex, and the fifth and following segments black 

 0/ dusky. 



Hab. — District of Columbia. 



Described from several specimens taken together on the bark of 

 tulip poplar, and evidently infesting some Tineid larva secreted in 

 the crevices of the bark. 



TAPIXOPS Forster. 

 To this genus belongs Oiihocentrus californicu.i Ashm. 



ATMETUS Forster. 

 Atnietiis uigritus sp. n. 



9 . — Length 2 mm. Polished black : ridge of face, upon which the autennse 

 are inserted, superiorly margined with yellow ; palpi, except the last three joints 

 of the maxillary palpi, which are dusky, the mandibles, except tips, and the 

 tegulse white. Legs brown or fuscous, the coxse, tips of femora and tibige, honey- 

 yellow, the hind coxae black, or piceous-black : antenna; 23-)ointed, brown-black 

 above, beneath yellow, the first flagellar joint transverse, shorter than the second, 

 the joints after the fourth, except the ovate terminal joint, all wider thau long ; 

 nietathorax areolated. Wings hyaline, the stigma and veins pale yellowish, the 

 areolet small, but complete, the second recurrent nervure being interstitial with 

 the outer nervure of the areolet. Abdomen, except the first segment, which is 

 longitudinally aciculated, smooth and polished, the second seginent having at 

 basal lateral angles a small yellowish spot separated from the rest of the surface 

 by a delicate grooved line. 



Hab. — Columbus, Ohio. 



Described from a single s[)ecimen received some years ago from 

 Dr. Clarence M. Weed. 



Atinetiis tetra/.oiialus sp. n. 



9 . — Length 4 mm. Polished black ; supei'ior margin of facia! j)roniinence. 

 scape beneath and legs, except hind coxae, hrownish yellow; paljji and tegulae 

 whitish : apical margin of first, second, third and fourth abdominal segments red- 

 dish yellow; venter yellowish white; antenna; 27-joiuted, tapering toward tips 

 brown, the flagellar joints, ext^ept those near the tips, wider than long, the first 

 a little shorter than the second, the second a little shorter than the third ; meta- 

 notuni areolated. Wings hyaline, the stigma and veins brown, the areolet large, 

 pentagonal, the second recurrent nervure joining it a little be.yond its middle, 

 the subinedian cell longer than the median. Abdominal segments 1 and 2 and 

 base of 3. shagreened, the first with a longitudinal depression at the middle. 



ifai.— West Clitf, Colo. 



Described from one 9 specimen received some years ago from 

 iMr. T. I). A. Cockerell. 



AtiiietiiN califoriiKMis s]). n. 



9- — Lcuifth •") () null. Head except vertex, a spot at bottom of the frontal 

 excavalidu and tln' occi]iut, the antenna'. excei>t aliove. tlie thorax. exce])t tliri'i' 



