G. C. DAVIS. 287 



Three females and four males from California (types, coll. Amer. 

 Ent. Soc). 



Nflenion ]u<«oriii!« Cress. (Tryphon), Prop. Acad. Nat. Sci. Phil. 1878. 373. 



9 % . — 6 mm. This species diflPers from aiUfornicns in color markings only in 

 the yellow or white markings on the legs ; the posterior tibise are yellowish white 

 behind, the stripe reaching almost to the apex of the tibiae; the four anterior 

 legs whitish yellow from apical two-thirds of femora; the femora at base behind 

 and beneath being more or less black. This species is also larger than cdUforniciis 

 and more highly polished. 



Two males and two females from Southern California (types, coll. 

 Amer. Ent. Soc). 



IVcenion palinaris n. sp. 



9 % . — 6 mm. Color markings the same as in californicHfi except the face, which 

 has two semi-circular spots covering the raised portion, being separated more or 

 less completely l>y a vertical dark stripe; the body, yiarticularly the abdomen, 

 pleurae and the clypeus, are more highly polished than in either of the other 

 species. 



Twenty-eight females and five males from Southern California 

 (types, coll. Amer. Ent. Soc. and Davis). 



VOIiUCRIS new gen. 



Body coarsely and closely punctured, sliagreened, subopaque, finely 

 pilose. Head excavated behind, oval in front ; antennse tapering, 

 segments short and thick ; face rugosely punctured ; clypeus scarcely 

 separated, irregularly and deeply punctured and traversed by ir- 

 regular transverse wrinkles, broadly rounded at apex. Metathorax 

 rugose, areolated, the transverse basal carina faint or often wanting. 

 Abdomen broad, subcompre.<sed in 9 » ovipositor exserted, curved 

 upward ; basal segment broad, flanging at apex, carime wanting or 

 small, lateral carinse wanting between spiracles and apex. Legs 

 long and moderately strong ; apical segment of posterior trochanters 

 extends beneath the base of the femora with a broad and rather 

 long tooth-like projection. Wings without areolet ; stigma thick, 

 triangular, united with marginal nervure back of middle ; peristigma 

 large ; third discoidal cell almost as broad at base as at apex ; hu- 

 meral cross-nervure of hind wing broken below the middle. 



Voliicrisi seniiriirii<4 Cress. (Tryphon), Proc. Ent. Soc. Phil, iii, 278. 9. 



Tryphon riificinctus Cress., ibid. 280, % . 

 9 % • — 7-8 mm. Head and thorax black, with mandibles, palpi, tegulaj, and 

 sometimes apex of clypeus, dusky rufous; abdomen rufous, often more or less 

 black on basal segment and dusky on apical in 9^1" '& > black on basal segment 

 and on the two or three apical segments, occasionally piceous on all segments; 

 legs rufous with ])osterior femora somewhat piceous, in "^ the coxa; are black; 



TRANS. AM. KNT. .SOC. XXIV. OCTOBER. 1897. 



