406 NEW SPECIES OF HYMENOPTERA 



epistcriia abo^^e, tegulae, large transverse spot on mesoscutellum and metano- 

 tiim, yellowish. Abdomen black, covered with long, thin, whitish pubescence; 

 dorsally with large, sparse, shallow punctures ; ventrally with the punctures 

 somewhat smaller and closer; first tergite with large lateral yellow spots; 

 second tergite with a rather broad yellowish band which is deeply and narrowly 

 emarginate medially, and squarely emarginate on each side posteriori}^; 

 sometimes this band is completely interrupted so that the segment has the 

 appearance of having two large lateral spots with a medial transverse spot 

 apically; tergites two to five with an apical yellowish band, which is rather 

 widely emarginate anteriorly at the sides; apical tergite and venter immaculate. 

 Coxae, trochanters and basal two-thirds of femora, of front, middle and hind 

 legs, entirely black; apical third of femora, tibiae and tarsi, of front, middle 

 and hind legs, lemon-yellow. Wings hyaline, irridescent. Submedian cell of 

 anterior wings shorter than the median; base of wings yellowish; stigma and 

 nervures testaceous. 



9 . Differs from male as follows; yellow on front extends only slightly 

 aljove the base of antennae; front strongly striato-punctate; mandibles yellow- 

 ish except the tips; scape beneath entirely yellowish; only a minute spot on 

 basal joint of fiagellum beneath yellowish; flagellum beneath rufous. Yellow 

 line on pronotum narrowly interrupted and no yellow on the mesoscutellum. 

 Abdomen more sparsely punctate; second tergite with two large yellow spots 

 laterally and a narrow transverse apical spot medially; sixth tergite with two 

 yellowish spots. Apical joints of tarsi rufous. 



Type, a male taken at Harrison, Nebraska, August 15, 1908, 

 (C. H. Gable). Allotype, a female collected at Ute Creek, 

 Colorado, August 9 on Chrysothammis sp., (R. W. Dawson). 

 Twenty paratypes collected at Harrison, Nebraska, August 4, 

 1908; nine paratypes, Harrison, Nebraska, August 9, 1908; three 

 paratypes, Harrison, Nebraska, August 15, 1908; one paratype, 

 Glen, Nebraska, August 17, 1906; one paratype, Ute Creek, 

 Colorado, August 9; collected on Helianthus sp., Solidago sp. 

 and Chrysothamnus sp. 



Related to pulcher, from which it is distinct by the long, whitish, 

 conspicuous pubescence on the face below the antennae, by the 

 different sculpture of the propodeum and by the larger punctures 

 on the abdomen. 



Philanthus siouxensis sp. no v. 



1908. Philanlhus albijrons H. S. Smith, l'ni\-. Ncbr. Studies, viii, p. 356, 

 (nee Cresson, nee Viercck and Cockerell). 



9 . Length 8 to 10 mm. lilack, covered with very short, sparse, whitish 

 pubescence. Head black; clypeus, occiput and cheeks very sparsely punctate; 

 front below the ocelli strongly striato-punctate; mandibles except the tips, 

 clypeus, front to the emargination of the eyes except a wide black line reach- 

 ing down from the back of the occiput to the base of each antenna, scape 



