280 AMERICAN HYMENOPTERA. 



ing to a point, segments short. Head broader than thorax, disc- 

 shaped ; clypeus elevated, scarcely separated ; scutelluni elevated ; 

 metathorax with longitudinal carinse. Abdomen short, broadly 

 sessile ; basal segment short, triangular, dorsal cariuse faint. Legs 

 long and strong. 



Westwoodia fuiiiipennis Prov. {Tryphon), Faune Ent. Can. ii, 392. 



9. — 4 nun. A brond, short, thickset species with fuscous wiugs; head and 

 thorax piceous to black, nietatlioras sometimes rufous: abdomen and legs rufous ; 

 antennge piceous, scape rufous beneath ; mandibles, palpi and tegulse reddish 

 yellow ; wings large, longer than body, nervures and slignia dark brown ; areolet 

 large, oblique, subsessile; humeral cross-vein of hind wiug broken at the middle : 

 thorax polished ; abdomen broad, subcompressed at apex ; petiole short, broad, 

 narrow at base and forming an equilateral triangle; guides of ovipositor broad, 

 flat, black. 



Canada, Mt. Washington, N. H. (Mrs. Slosson). Type, coll. 

 Quebec Museum. 



€OSMO€OXUS Foerster. 



CosiliOCOiiu»« eaiia<leii!!>i!!i Prov. (Tryphon), Nat. Can. vii, 117; {Mesolius) 

 Faune, ii, 417. 

 9 % ■ — 6-9 mm. Black, with face, mouth-parts, more or less of antennae at 

 base, four anterior legs, except more or less of femora and coxfe. hind legs except 

 coxffi, femora and apex of tibise, tegulse and more or less of abdomen from apex 

 of first segment to apex of the fifth, pale lemon-yellow, the third segment always 

 yellow; antennae brown, reddish at apex; wings reddish, subhyaline, nervures 

 and stigma reddish brown; face flat, punctured and elongate below; clypeus ele- 

 vated, large, sparsely hairy; spine on the front above antennae is very prominent 

 in our western representatives, but small and nearly wanting in the eastern ones : 

 thorax coarsely punctured : scutellum triangular or rounded at apex, margined 

 latei'ally; metathorax punctured, but not rugose; basal segment of abdomen 

 coarsely punctured, remainder polished. 



Comes very near to elonrjator Fab., except in the yellow face. 

 Eleven specimens from Canada, New Hampshire, Colorado and 

 Washington. 



QITADRIGAIVA new gen. 



Head oval, slightly enlarged behind eye.s, closely punctured ; face 

 considerably swollen, coansely punctuied and finely pilose ; clypeus 

 polished, sparsely punctured, thick and with strong, median, trans- 

 verse carina ; antennae strong, nearly as long as body. Thorax short, 

 strong, closely punctured; slight parapsidal depressions anteriorly; 

 scutellum triangular, oval and without distinct lateral cariuie ; meta- 

 notuin brightly polished, without puncture or shagreen, longitudinal 

 carinse large and elevated, no transverse carinje ; remainder of meta- 

 thorax punctured and scabrous, carina beneath s'piracles small. Ab- 



