368 AMERICAN HYMENOP'J'ERA. 



white; posterior femora at apex, four posterior tihise near base and at apex, and 

 four posterior tarsi on apical half of each segment black ; abdomen uneven, 

 coarsely punctured, basal segment tubereulate abo%'e : thorax smooth, shining; 

 punctures apparent on metathorax, which is otherwise smooth ; wings hyaline, 

 uervures and stigma brown; areolet large, the second recurrent not entering at 

 the apex ; antennte brown, whitish beneath near base, scape black. 



Two specimens from Agricultural College, Michigan, taken Oc- 

 tober 13th. 



Piiiipla conquisitor, var. riif'iiscula n. var. 



9 . — Ditfers from conqmsifor (1) by having the abdominal segments margined 

 at apex and laterally with rufous, the lateral apical corners in one specimen being 

 broadly rufous; (2) by the antenute and palpi being brownish rufous; (3) by 

 having the tarsi pale rufous, with apical segment and claws black ; the apical 

 portion of all tarsal segments is more or less dusky. 



Two females, Michigan and northern Illinois (Dr. Nason), 



l'oly!!«|>liinctii spiiiONa n. sp. 



9 . — 7 mm. ; ovipositor 3 mm. Black, with abdomen piceous, darker at apex '> 

 head shining, pilose ; clypeus dark rufous, palpi white, antennae pale brown, nearly 

 white at base; thorax black, with scntellum and lower posterior portion of meso- 

 pleura rufopiceous; metathorax rufous, dusky above and blnck on posterior disc; 

 legs honey-yellow, with four anterior trochanters, base, middle and spurs of four 

 posterior tibite and all of tarsi, except apex of segments which are brown, white; 

 four posterior tibise with brown annulus at apex and another one-fifth from the 

 base; abdomen opaque, punctured, with apical ridge of segments and two apical 

 segments shining: metathorax ])unctured, convex on dorsum, truncate and con- 

 cave at apex owing to the protrusion of two large, broad, round spines at the 

 lateral apex ; wings subhyaline, areolet wanting, stigma white. 



PolyN|>liiiicta bii*arinata n. sp. 



%, . — 7 mm. Black, with palpi, tegulfe, line in front, trochanters, anterior coxae, 

 apical half of middle coxae, apex of all femora, four anterior tibiae and tarsi, 

 broad strii)e on posterior tibiae, extending from the base nearly to the apex, and 

 basal half of fiist tarsal segment of hind tarsi, white; remainder of hind legs 

 ferruginous, except hind tibiae and tarsi, which are black : antenna' brown ; wings 

 hyaline, areolet wanting, small stump of cubital cross-vein present, nervures and 

 stigma brown; head and thorax polished; mesonotum trilobed, sparsely and 

 finely punctured ; metauotum oval, bicarinate and coa-sely punctured ; abdomen 

 uneven with prominent swellings and broad deep grooves, coarsely and closely 

 punctured even on apical margins of .segments; basal segment bicarinate. deeply 

 grooved at base between carinae. 



One specimen from Moscow, Idaho (Aldrich). 



Polysphiucta slossonse u. sp. 



9. — 5-6 mm. : ovipositor 1.2 mm. Slender, black, marked with white and 

 rufous: head black, polished ; clypeiis slightly projecting, palpi and scape white, 

 antennae brown, dirty white beneath; thorax black, with scutelluin, rectangular 



