24 PROCEEDINGS OF THE NATIONAL MUSEUM vol.78 



tually without sculpture except metapleurum, which is irregularly 

 transversely rugose; pronotum not tumid on dorsal margin, lateral 

 anterior margin with a high carina, epomia present, short; prepec- 

 tus high, lateral lobes flattened, notauli confluent posteriorly ; scutel- 

 lum very high, strongly compressed ; mesopleural furrow distinctly, 

 prepectal furrow obscurely, foveolate, subalar tubercle low and with 

 a weak carina traversing its summit ; propodeum polished, unsculp- 

 tured, basal middle triangularly flattened with anterior angles prom- 

 inent, spiracles large, broadly oval, basal carina very high sinuate, 

 apophyses very long, slender, curved, and situated much nearer ca- 

 rina than apex; hind femur distinctly thicker in middle than at 

 ends; inner calcarium about two-fifihs as long as basitarsus; areolet 

 only a little longer than broad, recurrent antefurcal, nervulus inter- 

 stitial, postnervulus broken at middle, nervellus broken at lower 

 fourth. Abdomen rather broad, rather densely clothed with long 

 white hair, first tergite and base of second narrow, second much 

 shorter than first, more than three times as long as broad at base, 

 postpetiole hardly twice as broad as petiole; sheath as long as hind 

 tibia and nearly twice as long as first tergite. 



Head black; mandibles partly, palpi and annulus extending from 

 near base of third to fifteenth flagellar joint white ; thorax pale red- 

 dish stramineous; pronotum in dorsal middle, mesoscutum, scutel- 

 lum and postscutellum black; scutellar carinae white; propodeum 

 basad of carina and between spiracles dark piceous, medially behind 

 carina slightly stained; front and middle legs stramineous, femora 

 posteriorly darker, the front femur testaceous and middle femur 

 piceous, tarsus blackish apically ; hind coxa pale testaceous, trochan- 

 ter and femur piceous, the femur nearly black, tibia and tarsus whit- 

 ish, the tibia tinged with yellow; wings hyaline, faintly yellowish, 

 venation black with stigma pale along middle, tegulae stramineous 

 with a white longitudinal stripe, apex piceous; abdomen black 

 dorsally, white laterally and ventrally. 



Type-locality. — Canamina, Bolivia. 



Type.—C2it. No. 42191, U.S.N.M. 



One specimen taken in July by W. M. Mann on the Mulford 

 Biological Exploration of 1921-22. 



23. POLYCrRTUS (POLYCYRTUS) CONSTRICTICLAVUS, new species 



Female. — ^Length 14 mm. 



Vertex hardly concave in straight front view, but with a rather 

 deep impression on each side of ocellar area; frons with distinct 

 scrobes bounded on the outer side by ridges and on the inner side 

 by the subcarinate margins of a median impression, frontal horn 

 stout, obtuse at apex with a deep constriction toward base, basad of 



