112 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 63. 



equal to the diameter of the lateral ocellus; interocellar space, vertex 

 and occiput more coarsely shagreened than the cheeks, with a coarser 

 sculpture than any part of the face except in the region of transverse 

 striations just above the bases of the antennae; occiput immargined; 

 antennae with a distinct 4-jointed club; scape club-shaped, curved, 

 narrowed basally, broadened medially to apically, slightly emarginate 

 at the apex and with a thin lamellated edge on its inner margin, the 

 lamella not apparent near the base of the scape; funicle joints densely 

 covered with rather long white hair, club joints also covered with 

 white hair but not so long as on the funicle ; first club joint triangul i r, 

 about as wide as long; second and third club joints equally long, sis 

 long as the first, broadly transverse and produced on the outside itito 

 a blunt spine; terminal joint obconical, blunted apically, one and 

 one-half times as long as the penultimate; thorax strongly convex 

 above; pronotum, anteriorly and superiorly, and mesonotum, sha- 

 greened; pronotum anteriorly transversed longitudinally by two small 

 but sharply marked carinae extending almost to the suture separating 

 the pronotum from the mesonotum; mesonotum with two short, 

 shallow, but indistinct furrows anteriorly; notauli nearly complete, 

 sharply indicated posteriorly; scutellum covered with white hairs; 

 spine short and blunt, flattened above; episternum with a few arcuate 

 striae above; pleurum sparsely hairy anteriorly, thickly so posteriorly, 

 polished, separated from the propodeum by a high rounded ridge; 

 propodeum except on posterior part of ridge, hairless and polished; 

 wings slightly smoky, darker at the apical margins; abdomen about 

 twice as long as the thorax; first tergite hairy, second strongly con- 

 vex above, slightly less than twice as long as wide, with a slight 

 median longitudinal elevation anteriorly, perfectly smooth and pol- 

 ished, with a few minute scattered hairs laterally; third tergite about 

 three times as wide as long, polished except in the anterior angles 

 where there are a few faint grooves or striae ; fourth tergite quadrate, 

 delicately shagreened and sparsely hairy, more coarsely shagreened 

 laterally, a narrow anterior triangular space smooth and polished; 

 fifth tergite one and one-half times as long as wide, distinctly but 

 not sharply, ridged above, shagreened or faintly longitudinally 

 grooved except on its extreme anterior margin and a rather narrow 

 border posteriorly; sixth tergite about as long as the two preceding, 

 narrowed from apical one-third to an acute point from which issues 

 the ovipositor, longitudinally striate except at extreme base and 

 apical one-fourth; second sternite a little longer than the thorax 

 broadly rounded below and behind, orbicular, curving upward behind 

 till one can perceive an aperture extending to the apex of sternite 

 three, against the base of which it fits tightly; in the upper part of 

 this segment on each side just a little anterior to the middle is a 

 deep smooth wide pit of a similar shape to that made by Myrmelion 



