402 NEW SPECIES OF HYMENOPTERA 



Pseudoplisus infumatus sp. no v. 



1908. Pseudoplisus smithii H. S. Smith, Univ. Nebr. Studies, viii, p. 350» 

 (nee Cresson). 



1908. Pseudoplisus floridanus H. S. Smith, Univ. Nebr. Studies, viii, p. 

 350, (nee Fox). 



cf. Length 14 to 16 mm. Black with red and yellow markings. Head 

 black, very sparsely covered with golden pubescence; eyes distinctly con- 

 verging below; front and clypeus sparsely punctate; clypeus convex; apex 

 of clypeus shghtly ferruginous; mandibles except the tips, labrum and inner 

 eye margins, yellow; scape and base of flagellum rufous; remainder of flagellum 

 black. Thorax impunctate, covered with very sparse golden pubescence; 

 mesosternum distinctly carinate; suture between mesoscutum and mesoscutel- 

 lum foveolate; enclosure of propodeum well defined by foveolate sutures, and 

 divided by a longitudinal, foveolate suture; line on pronotum, posterior lobes 

 of pronotum, tegulae and a narrow line on the metanotum fulvous; a wide 

 fascia on the mesoscutellum yellow; two longitudinal lines on the mesoscutum 

 and a spot on each side of the propodeum obscure ferruginous. Abdomen 

 subpetiolate; piceous black; first two tergites impunctate, remainder of abdo- 

 men dorsally and ventrally sparsely punctate; covered with fine, sparse, golden 

 pubescence; first tergite, except extreme base, entirely yellow and a narrow 

 apical fascia on the second tergite yellow. Coxae black, trochanters and 

 femora blackish above, rufous below; tibiae and tarsi rufous. Wings entirely 

 fuliginous, stigma testaceous; cubital cell in hind wings terminating far beyond 

 the origin of the cubital vein; second recurrent nervure in front wings not inter- 

 stitial, originating before the second transverse cubital vein. 

 9 . Unknown. 



Type, a male taken at Haigler, Nebraska, August 19, 1909, 

 (C. H. Gable). Two paratypes taken at West Point, Nebraska, 

 June 1887. One of these differs from the type in having a 

 narrow yellow fascia on the third, fourth and fifth abdominal 

 tergites, and in having the fascia on the second tergite very 

 broad, covering almost all of the apical half of the segment. 



Related to bipartitus from which it is easily distinguished by 

 the large size, by the yellow of first tergite of the abdomen 

 and by the uniform dark coloi-ation of the wings. 



Mellinogastra williamsi sp. nov. 



cT. Length 8 mm. Head black; eyes parallel, not converging or diverg- 

 ing towards the clypeus; front very finely and closely punctate, appearing 

 granulate; vertex and cheeks finely but more sparsely punctured; clypeus 

 slightly convex; clypeus and lower half of front covered with silvery pubes- 

 cence; antennae long, slender; mandibles except the tips, labrum, clypeus 

 except two small basal spots and a narrow apical margin, inner eye margins, 

 spot between the antennae, scape and pedicellum beneath, yellow; flagellum 

 beneath testaceous. Thorax black, finely punctured, with sparse, silvery 

 pubescence; mesosternum carinated anteriorly but ei)istcrnum and epiineron 



