CLARENCE E. MICKEL 409 



j-jpe, a female taken at Worland, Wyoming, July 10, 1911, 

 (L. Brunei"); one paratype from Logan, Utah. 



Rather closely related to fumipennis by lacking the clypeal 

 process, by the markings of the face, and by the structure of the 

 fifth abdominal sternite; distinct from that species in the finer 

 and closer puncturation, markings of the abdomen, untl much 

 lighter wings. 



Cerceris flavofasciata H. S. Smith 



1908. Ccrccria Jlavofasciata H. S. Sinith, I'liiv. Xebr. Studios, viii. p. .364. 



The male differs from the female as follows: Length 9 to 11 

 mm.; clypeus simple, face entirely yellow below the antennae; 

 usually two yellow spots on mesoscutellum (sometimes wanting) ; 

 first abdominal tergite either entirely black or slightly marked 

 with yellow at the apex; second tergite with a broad yellow band 

 as in the female; remaining tergites with a narrow apical yellow 

 band widened at the sides; wings subhyaline, quite dark on the 

 costal margin. Enclosed area of propodeum and puncturation 

 same as in the female. 



Allotype, South Bend, Nebraska, .July 4, 1915, on Ceanothus 

 americamis, (E. G. Anderson). 



Cerceris architis sp. nov. 



9. Length 16 mm. Black; spot on the ch'peal process above, spot -be- 

 neath the process, a large spot each side of the face, small spot each side on 

 the pronotum, tegulae, metanotum, two spots on first abdominal tergite 

 (nearly connected), broad band on the second tergite, deeply emarginate 

 medially, narrow bands on tergites three to five, all yellow; venter black; legs 

 black, except femora tipped with yellow, tibiae and tarsi of anterior and inter- 

 mediate pair yellow, and tibiae of hind pair largely yellowish. Body rather 

 finely but not closely punctate; (;lypeal process al)out twice as broad as long, 

 shghtly emarginate medially; enclosure of propodeum large, mostly smooth 

 but with fine striations basally; pygidial area a little more than twice as long 

 as broad, narrowed and rounded at the tip. Wings fuliginous (much as in 

 fumipennis), stigma black. 



cf. Unknown. 



Type, a female collected at Soutli Bend, Nebraska, July 2, 

 1915, on Melilolus alba, (E. G. Anderson). 



Very distinct in the shape of the clypeal process, the sculpture 

 of the enclosure of the propodeum, the black stigma, dark wings 

 and yellow nuirkings of the abdomen. 



TRANS. AM. ENT. SOC, XLII. 



