162 KANSAS UNIVERSITY SCIENCE BULLETIN. 



11. Scutum with very fine close punctures, appearing granulate; frons 



granulate-punctate; anterior edge of clypeus rather narrowly 

 rounded, not raised mesad (fig. 71), its apical half sparsely 

 punctate and shining; antennal joints not strongly ciliate; a 



little brassy pile on middle of scutum Uubius 



Scutum and frons with deep separate punctui'es; anterior edge of 

 clypeus rounded out for most of its interocular width, a little 

 raised mesad, sometimes slightly emarginate (fig. 70), its 

 apical half very finely reticulate, and in addition there are 

 some large, sparse punctures; antennae strongly ciliate (fig. 

 31) ; scutum with the pile all white propinquus 



12. Width of third submarginal cell along the radius equal to the 



radius from the third submarginal cell to the truncation (fig. 



48) ; wings subfuscous acuta 



Width of third submarginal cell along the radius not as much as 

 the length of the radius from the third submarginal cell to the 

 truncation ; wings nearly or entirely clear 13 



13. Apex of femora, and tibiae and tarsi entii-ely, reddish yellow. 



inininius 

 At most tarsi in part reddish brown 14 



14. Scutum strongly depressed anteriorly in the middle; disc of pro- 



podeum rather coarsely though uniformly granulate, only 



striate at base sepidcralis 



Scutum scarcely or not at all depressed anteriorly in the middle; 

 disc of propodeum coarsely granulate and with irregular (dis- 

 tinct or obscure) longitudinal strise or raised lines throughout 

 the middle of the disc glabrior 



Taehijsphex intermedins Vier. belongs to the genus Tachytes, where 

 I have placed it. 



Tachysphex propinquus Vier. 



(Fig. 1.5, wings; 31, portion of j antenna; 70 and 73, clypeus; 81, fos- 



sorial comb, o ; 104, pygidium, g .) 

 Tachysphex propiiiqiins Viereck; Ent. News, XV, 87-8; 1904. o . 



o . Rather slender. Anterior margin of clypeus rounded out, a little 

 wavy, slightly elevated mesad, where it is a little emarginate, no lateral 

 teeth, rather large sparse-punctate; front finely and vei-y closely punctate; 

 antennae slender, joint 2 about one-half as long as 3, which is three- 

 fourths or more the length of 4; interocular space just a little more than 

 the length of antennal joints 2 and 3 ; scutum and scutellum finely 

 and very closely punctate, the former well depressed anteriorly in 

 the middle, sides with shallow contingent punctures; disc of propodeum 

 coriaceous (very finely and evenly granulate), the sides largely coriaceous, 

 posterior face finely striate and with a median almond-shaped fovea; legs 

 slender, the tarsal comb pronounced; venation rather delicate, the mar- 

 ginal cell rather narrowly and obliquely truncate; abdomen very finely 

 reticulate; pygidial area convex, sparse punctate, long and narrow, con- 

 stricted preapically and just a little more than two times as long as its 

 basal width. Ferruginous; head except clypeus, scape at least, and the 



