326 AMERICAN HYMENOPTERA. 



Clepsiporthus rubiginosti!^ Cress. {Mesoleius). Proc. Acad. Nat. Sci. Phil. 

 1878, 372. 

 2 % . — 9-11 mm. Eufous, with sutures of thorax more or less black ; mouth- 

 parts, scape beneath, tegulse, spot in front, scutellums, four anterior coxse and 

 trochanters and aunulus on posterior tarsi, also usually annulus on antenuse. 

 pectus, sternum and posterior trochanters, and sometimes anterior margin of 

 mesonotum, posterior tibiae, except apex, and four anterior legs, yellowish white ; 

 antennae varies from black with a distinct white annulus on segments 10-21, to 

 dusky rufous, slightly paler on these segments; wings yellowish hyaline, ner- 

 vures and stigma brown; areolet wanting; transverse median nervures unites 

 but little back of transverse cubital ; humeral cross-vein of hind wing broken 

 near the middle ; mandibles short and broad ; clypeus narrow, long, broadly de- 

 pressed on apical two-thirds and with transverse ridge near the base ; abdomen 

 long, but little broadened from base ; petiole broad at base gradually widening 

 toward apex, undulating above, oval ; legs large, long, and with large claws. 



Two females and four males from California, Washington, Mos- 

 cow, Idaho (Prof Aldrich), Lawrence, Kansas (Prof Aldrich) and 

 Virginia (Clia.s. Johnson). Types coll. Amer. Eut. Soc. 



Clepsiporthus assiduiis Cress. (Mesoleptus), Trans. Amer. Ent. Soc. ii, 97. 

 9 % . — 7 mm. Head and thorax black, with scape beneath, anterior orbital 

 lines, V-shaped spot beneath antennae, clypeus, mouth-parts, tegulae. spot in front- 

 broad line on anterior margins of mesonotum and usually four anterior coxae and 

 trochanters lemon-yellow; posterior tibiae and tarsi dusky, remainder of legs 

 rufous; abdomen rufous, petiole more or less black, and apex dusky or black in 

 ■J, ; antennae reddish brown : wings subhyaline, nervures and stigma brown ; 

 longitudinal carinae on metathorax minute or wanting; abdomen rather broad, 

 shagreened ; petiole much broadened behind spii-acles, spiracles somewhat tuber- 

 culate and lying close above the lateral carina. 



Fifteen specimens from Montana and Massachusetts (types, coll. 

 Amer. Ent. Soc). 



Clepsiporthus flavidiis n. sp. 



2. — 9 mm. Black, with annulus on antennae, scutellum, basal half of tibiae 

 and large annulus on hind tarsi pale yellow; four anterior tarsi and borders of 

 yellow markings are reddish brown; wings fusco-hyaline, iridescent; areolet 

 wanting, third discoidal cell much narrowed toward base; humeral cross-nervure 

 broken above the middle; antennae long, slender, involute; clypeus small, not 

 separated, polished, transversely impressed ; carinae on metathorax wanting; ab- 

 domen smooth, depressed, ovipositor strong, short, scarcely exserted. 



One specimen from Mt. Washington, N. H. (Mrs. Slosson) ; coll. 

 Davis. 



Clepsiporthus truucatus n. sp. 



2 *{,. — 6-8 mm. Black, with face, mouth-parts, cheeks and scape beneath, or- 

 bital lines at side of antennae, tegulae, spot in front, another beneath, broad line 

 on anterior margins of mesonotum. pectus and sternum, white; four anterior 

 coxfe and trochanters white or reddish white, posterior tibiae and tarsi dusky, 

 remainder of legs rufous; antennae dark brown; wings hyaline, nervures and 

 stigma brown ; areolet petiolate, sometimes wanting; humeral cross-vein of hind 



