MAR 11 1898 



G. C. DAVIS. 281 



donien strong, subconipressed in 9 , closely pnnctnred on two basal 

 segments, finely pilose and shagreened on remainder ; ovipositor 

 slightly exserted ; petiole broad, slightly narrowed toward base, 

 carinc'B broad, strong and reaching nearly to apex. Wings with 

 lanceolate stigma ; areolet present, petiolate ; second discoidal broken 

 and with faint spur projecting outward. Legs long; tibial spurs 

 short ; third and fifth tarsal segments subequal, fourth small. 



Qiiadi'igaiia aniericaiia Cress. (Tryphon), Proc. Ent. Soc. Phil, iii, 276, % . 

 Tri/phoH affinis Caress, ibid. 277, J • 

 9 %. — 9-11 mm. Black, with abdomeu, except barial portion of petiole, ru- 

 fous: iu % face, scape beueath, mouth-parts, tegulse, four anterior legs, trochan- 

 ters, tarsi and annulus on tibise of posterior legs, pale yellow ; in 9 those parts 

 are nearer rufous and with face above clypeus mostly black ; hind legs with 

 femora at apex, tibise at base and apical half and spots on tarsi dusky, femora 

 and coxfe rufous; antennae brown, paler at apex and beneath ; wings subhyaline, 

 nervures and stigma brown ; transverse median nervure uniting back of basal > 

 humeral cross-nervure broken near the middle. 



Three females and seven males from Massachusetts, New York, 

 Pennsylvania, New Jersey, Delaware, Michigan, Illinois, Montana 

 and Canada (type, coll. Amer. Ent. Soc.j. 



TRYPHOX Fallen. 

 (Specimen Novam Hymen, disponendi niethodum exh., 1813.) 



Head broad, disc shaped ; a more or less distinct tubercle ; clypeus 

 large, thick, and with transverse carina. Thorax gibbous; pleurae 

 inflated; parapsidal grooves present anteriorly; scutellum large; 

 metathorax plainly areolated, sometimes lacking the transverse basal 

 carina. Abdomen sessile, subclavate, basal segment with more or 

 less distinct carinas. Legs robust. Wings large, areolet present, 

 petiolate. 



Two basal segments of abdomen with transverse impressions near the apex ; body 



black iiigriiin n. sj). 



Two basal .segments without distinct transverse impressions before apex. 



Scutellum quadrangular, flat above and strongly margined and shelving at the 



sides seiniuiger Cress. 



Scutellum triangular and subpyramidal. 

 Abdomen in part rufous. 



Posterior coxse and femora ext-ept apex, rufous COinmiinis Cress. 



Posterior coxse, and usually whole of legs, black atripeM n. vav. 



Abdomen black or piceous var. clypeatiiM Prov. 



Tryphon nigrum n. sp. 



'^.— 6 mm. Black, with mouth-parts except basal portion of clypeus, sca]>e 

 and legs reddish yellow; femora and apex of tibite of hind legs piceous to black ; 

 tegulse yellow; wings broad, subhyaline; nervures and stigma brown, paler at 



TRANS. AM. ENT. SOC. XXIV. (36) OCTOBER, 1897. 



