NO. 2261. NEW REARED PARASITIC HYMENOPTERA—OAHAN. 119 



Type.— Cat. 21618, U.S.N.M. 



Four females reared by Mr. C. E. Smith in connection with 

 PhtJioritnaea striatella Murtfeldt and possibly parasitic on that 

 moth. Recorded in the Bureau of Entomology under Chittenden 

 No. 4252^ 



BASSUS USITATUS. new Bpecies. 



Resembles (Microdus) Bassus simillimus Cresson, but may be 

 readily distinguished by the nearly smooth, distinctly areolated pro- 

 podeum, which in shnilllmus is opaquely rugose and not distinctly 

 areolated. 



Female. — Length 4.5 mm. The head, viewed from in front, is dis- 

 tinctly broader than long; eyes large, strongly convex; face only 

 slightly convex, smooth and polished with sparse very fine punc- 

 tures; distance between eyes at antennae slightly greater than from 

 antennae to apex of clypeus; malar space rather short; antennae 

 t^eparated at base by a rounded ridge; viewed from above the head 

 is strongly transverse, polished, with a few very fuie punctures, the 

 frontal depression smooth and not bounded laterally by a carina; 

 postocellar line slightly shorter than the oceliocular line; occiput 

 slightly concave; antennae broken, the first flagellar joint a little 

 more than three times as long as thick and a little longer than the 

 second, joints beyond the second decreasing gradually in length; 

 thorax polished with sparse pale hairs ; notauli deep and nonfoveolate 

 or nearly so; transverse suture between mesoscutum and scutellum 

 weakly crenuJate; mesopleura without sternauli ; propodeum nearly 

 smooth, distinctl}'^ areolated, the median areola longer than broad 

 and more or less rugulose within; metapleura mostly smooth, more 

 or less rugose below the middle; longer spur of the hind tibiae a 

 little less than half the length of the basal joint of tarsi; areolet 

 of the front wings triangular with a petiole longer than the first 

 radial abscissa ; first brachial cell open at apex below the subdis- 

 coideus; abdomen as long as head and thorax combined, entirely 

 smooth and polished, the first tergite dorsally strongly bicarinate on 

 basal half; second tergite with a smooth, poorly defined, transverse 

 furrow which curves forward laterally inclosing an embossed area 

 at base of tergite ; suture between the second and third tergites dis- 

 tinct but smooth and not deep ; ovipositor extending beyond the apex 

 of abdomen 3.2 millimeters in the type. Antennae, head, prothorax, 

 mesothorax, four anterior legs entirely, and hind tibiae and tarsi, and 

 the ovipositor sheaths black; metapleura, propodeum, abdomen, and 

 the hind coxae and femora reddish testaceous; palpi and apical joint 

 of all tarsi, excluding the claw, more or less pale; wings blackish 

 with several small hyaline patches behind the stigma; veins and 

 stigma blackish. 



