CLARENCE E. MICKEL 403 



of mesothorax not separated; a crenulate furrow between the inesoscutum and 

 mesoscutellum; enclosure of propodeuni distinct, with a median longitudinal 

 furrow and striated on the basal two-thirds; broad line on the prothorax, pos- 

 terior lobes of pronotum, spot on the epistema above and a broad fascia on 

 the mesoscutellum, yellow. Abdomen black, apical segments with a very- 

 fine, sparse pile; very finely punctate interspersed with a few large punctures, 

 except on the second sternite where the large punctures are quite numerous 

 and deep; first segment coarctate; last sternite with four short, j'ellowish 

 bristles at the apex; apical fascia on the first tergite dilated at the sides, ol)lique 

 lateral spot on the second tergite, narrow apical fasciae on the third and 

 fourth tergites, wide apical fascia on the second sternite narrowly interrupted 

 in the middle and emarginate at the sides, and a narrow apical fascia on the 

 third sternite widely interrupted in the middle, all j'ellow. Coxae, trochanters, 

 femora and tibiae of front and middle legs yellow beneath, black above; 

 hind legs black, coxae with a yellow apical spot beneath, and trochanters, 

 femora and tarsi with a yellow stripe beneath; all the tarsi more or less reddish. 

 Wings hyaline, with a fuscous cloud in the marginal, second cubital and a part 

 of the third discoidal cells; cubital vein originating at or slighth' beyond the 

 transverse median nervure. 

 9 . Unknown. 



Type, a male taken at Omaha, Nel^raska, August 17, 1914, 

 (L. T. Williams). 



Similar to mellinoides from which it differs in the smaller size, 

 in being marked with yellow to a much greater degree and in the 

 eyes being parallel rather than diverging towards the clypeus'. 

 Named for Mr. L. T. Williams in recognition of his excellent 

 collecting of Hymenoptera. 



Hypomellinus venustus sp. nov. 



a'. Length 11 to 12 mm. General color rufous. Head rufous; covered 

 with a very fine, subtle, whitish pile; eyes slightly converging towards the 

 clypeus; clypeus convex, margined at the apex, ba.se with large shallow punc- 

 tures; front, vertex and cheeks, somewhat glabrous, with coarse, sparse punc- 

 tures; distance between the posterior ocelli shglitly greater than the distance 

 between them and the nearest eye margin; antennae long and slender, reaching 

 beyond the mesoscutellum; joints eight to ten of the flagellum slightly emar- 

 ginate; clypeus, mandibles except the tips, front below the insertion of the 

 antennae, inner and outer eye margins, a short, longitudinal line directly below 

 the anterior ocellus, and scape below, yellow; scape above and flagellum en- 

 tirely rufous; ocellar region black. Thorax rufous; with coarse, sparse punc- 

 tures; episternum and epimeron of mesothorax separated; suture between 

 mesoscutum and mesoscutellum foveolate; enclosed space of propodeuru dis- 

 tinct, divided by a foveolate channel, striated throughout, the striae coarse 

 and slightly oblique; posterior face of propodeum rugoso-punctate; line on 

 the pronotum, wide fascia on the me.so.scu1el]um, and metanotuiu yellow 



TRANS. AM. ENT. SOC, XLH. 



