360 PROCEEDINGS OF THE NATIONAL MUSEUM vol.88 



with which it agrees in many features of the head, thorax, and 

 appendages. From both these genera it differs remarkably in the 

 abruptly truncate propodeum and the stout, Fmp^a-like abdomen 

 with very short first segment and transversely impressed tergites 1-4. 



Female. — Head transvere; temples narrow, ocelli small; eyes di- 

 vergent below ; malar space long ; face and clypeus with dense, short, 

 silvery hair; clypeus weakly separated, minutely bidenticulate ; man- 

 dible evenly bidentate; antenna slender, basal three joints of flagel- 

 lum very long. 



Thorax stout; epomia distinct; notaulices rather deep anteriorly, 

 obsolescent on disk; sternaulices deep anteriorly, obsolescent in pos- 

 terior third; scutellum convex, immargined; metapleuron flat; pro- 

 podeum broadly truncate, the apical carina thick, prominent later- 

 ally, costulae and basal portions of median carinae obsolete, all other 

 carinae absent, spiracles very small, circular; legs moderately stout, 

 hind femur tapering from basal fourth to apex ; stigma narrow, with 

 radius somewhat beyond middle; areolet pentagonal, second inter- 

 cubitus largely bullated; nervulus postf ureal; second discoidal cell 

 with apical angle acute ; postnervulus broken far below middle ; ner- 

 vellus broken far below middle and strongly inclivous. 



Abdomen stout; first tergite nearly as broad as long, the sides 

 widely divergent to spiracles, thence more gradually divergent, a 

 shallow subapical transverse impression, petiole broadly flattened, 

 tergite in profile nearly rectangular above, dorsal carinae strong to 

 summit of elevation, spiracles a little behind middle; other tergites 

 strongly transverse, apices tumid ; tergites 2-4 with broad transverse 

 impressions, those of 2 and 3 with a small low tubercle at each end; 

 ovipositor slender, compressed, narrowly subsagittate at apex, sheath 

 much shorter than abdomen. 



Genotype. — Apotemnus truneatus.^ new species. 



APOTEMNUS TRUNCATUS, new species 



Figure 15 



Female. — Length 8 mm., antenna 6 mm., ovipositor sheath 2 mm. 



Head polished; face and clypeus very finely and densely punctate 

 and mat; face more than twice as broad as long; temple convexly, 

 sharply sloping; malar space as long as basal width of mandible; 

 antenna 24-jointed, basal two joints of flagellum equal and each about 

 six times as long as thick, all other joints at least a little longer than 

 thick. 



Thorax polished, with short, fine, appressed pubescence, humeral 

 portion of pronotum, mesoscutum along margins and on middle of 

 disk, scutellum, lower portion of mesopleuron, mesosternum, and 



