410 NEW SPECIES OF HYMENOPTERA 



Cerceris arbuscula sp. nov. 



9. Length 10 to 11 mm. Black; spot on the clypeal process, large spot 

 on each side of the face, two spots on pronotum, tegulae, metanotum, two small 

 lateral spots on first al)dominal tergite, rather broad band on the second tergite, 

 narrowed medially, narrow bands on tergites three to five, widened at the 

 sides, all yellow; venter black; legs black, except femora tipped with yellow, 

 tibiae and tarsi of anterior and intermediate pairs yellow, hind tibiae yellowish, 

 hind tarsi dusky. Body moderately punctured, clypeal process low, broader 

 than long, broader at the base, rounded beneath (much as in psamathe); en- 

 closure of propodeum small, rather coarsely striated longitudinally; pygidial 

 area about twice as long as broad, sides nearly parallel, rounded at the tip, 

 with deep punctures basally. Wings subhyaline, dark in the marginal cell 

 and at the tips; stigma yellowish. 



cf . Unknown. 



Type, a female collected at Omaha, Nebraska. July 23, 1913, 

 (L. T. Williams). 



In Banks' table this runs out near to psamathe, but differs from 

 that species in having the mandibles, interantennal carina, occiput 

 and propodeum entirely black, and in the differently sculptured 

 enclosure of the propodeum. 



Cerceris conifrons sp. nov. 



1908. Cerceris rufinoda crucis H. S. Smith, Univ. Nebr. Studies, viii, p. 

 370, (in part), (nee Viereck and Cockerell). 



9 . Length 8 to 9 mm. Black; mandibles at base, spot al)Ove base of 

 mandibles, produced portion of clypeus, spot between clypeus and insertion 

 of antennae, large spot each side of the face, scape beneath, small spot behind 

 the summit of the eyes, two spots on pronotum, spot on episterna beneath the 

 tegulae, tegulae, two spots on mesoscutellum, metanotum and narrow sub- 

 equal bands on abdominal tergites two to five, all creamy white; propodeum 

 except the enclosed space, first and second abdominal segments, all red; venter 

 except first two sternites, black; anterior and intermediate legs black, except 

 femora tipped with whitish, tibiae largely whitish and tarsi yellowish; hind 

 legs red, except tibiae and tarsi blackish; flagellum fulvous beneath. Body 

 moderately and closely punctured; clypeus produced so that it forms a cone; 

 the apex of the clypeus very strongly bidentate, the two teeth about as far 

 apart as the length of the scape; episterna with a spine before the intermediate 

 coxae; enclosed space of propodeum transversely rugose (much as in rufinoda); 

 pygidial area narrow at the base, convex at the sides and truncate at tiie tip. 

 Wings hyaline, dark at the tips, stigma black. 



cf . Unknown. 



Type, a female collected at Harrison, Nebraska, August 4, 

 1908, on Helianthus sp., (C. H. Gable). Four paratypes from 

 Harrison, Neligh and Glen, Nebraska, and Worland, Wyoming. 



Related to rufinoda crucis, but distinct in having the clypeus 

 produced and in the color markings which are indicated above. 



