324 AMERICAN HYMENOPTKRA. 



Zeniiocles flavifroiis Cress. (Mesoleptm), Proc. Ent. Soc. Phil, iii, 269. 



% . — 7 mm. Black, with ahdomen and posterior legs rufous; petiole on hasal 

 portion and apex of posterior tibife dusky ; face, mouth-parts, cheeks beneath, 

 scape beneath, tegulte, spots in front and beneath, triangular spot on anterior 

 niesonotum, four anterior coxse and trochanters, indistinct lateral stripe on lower 

 raesopleura and pectus, yellow ; four anterior legs reddish yellow ; antennse dark 

 brown ; wings hyaline, nervures and stigma brown ; areolet incomplete ; trans- 

 verse median and basal nervures interstitial ; sculpture the same as in the above 

 species, except the petiole, which is not carinate, but oval, smooth and not en- 

 larged until almost at the apex. 



One specimeu from iSrew Jersey (coll. Anier. Ent. Soc). 



Zeiiiio(le»« masiiaooi*iii!i> n. sp. 



%, . — 10 mm. Black, with face, except median line, three basal segments of 

 antennae beneath, mouth-parts, tegulse, point in front and basal two-thirds of 

 posterior tibite, yellow ; coxse black; basal trochanter, apex of tiliife and tarsi, 

 except basal segment, on hind legs, dusky; rest of legs honey-yellow, with hind 

 femora pale rufous; abdomen black, with segments 2-4 rufous, except black patch 

 on 2 ; aTitennse black, very large and nearly as long as body ; wings large, hya- 

 line, iridescent; nervures brown, stigma yellow, lanceolate; areolet present, 

 petiolate ; transverse median nervure uniting back of basal ; head shagreened, 

 broad, coarsely punctured, pilose; clypeus sparsely punctured, broadly rounded, 

 depressed at apex; teeth of mandibles wanting; notum of thorax polished, 

 sparsely punctured, pleurje closely punctured ; metathorax polished, without 

 carinse except below spiracles ; spiracles oval, elongate ; abdomen elongate, scarcely 

 widened ; petiole slender, straight, without carina, gradually widened toward 

 apex ; legs long and strong, claws large. 



One specimen from Washington (coll. Amer. Ent. Soc). 



DIEDRrS Foerster. 

 (Synopsis der Fam. und Gatt. der Ichneumonen. 1868.) 



Coxje rufoup areolatus n. sp. 



Coxa» black labradorensis n. sp. 



Diedrii!« areolatus n. sp. 



9 . — 11 mm. Black, with legs ajid abdomen dusky rufous; anterior coxfe and 

 basal portion of petiole, black; posterior tibise and tarsi and trochanters dusky; 

 maxillary palpi white, labial piceous: median spot on face, lateral portions of 

 clypeus and spot on mandibles, yellow; antennte dark brown, large, tapering; 

 wings yellowish hyaline, nervures and stigma brown ; areolet large, sessile ; 

 head shagreened, pilose; face enlarged beneath antennse, subpolished. sparsely 

 punctured; clypeus broadly depressed at apex and slightly emarginate: thorax 

 finely punctured, pilose, pleurae with median polished spot; mesonotum subtri- 

 lobed ; metathorax with small, distinct carinse, basal transverse carina wanting; 

 abdomen slender, pilose, excavated but little above at apex, coarsely punctured at 

 base; sheaths of ovipositor broad ; petiole arched, slightly carinate above and 

 with deep lateral groove, slender at base and gradually widening. 



One specimen from New Hampshire (coll. Amer. Ent. Soc). 



Diedriis labradorensis n. sp. 



9.— 11 mm. Black, with abdomen, beyond petiole, dark rufous, and legs pi- 



