Sphecoidea of Nebraska 43 
Females 3: Omaha, August 20, August 30 and September 5, 
1913 (L. T. Williams). 
Mimesa chalcifrons (Packard). 
1867. Psen chalcifrons Packard, Proc. Ent. Soc. Phil., V1, p. 401. 
1898. Psen chalcifrons Fox, Trans. Amer. Ent. Soc., XXV, p. 13. 
Females 1: Butte, July 2, 1914 (R. W. Dawson). 
Mimesa cressoni Packard. 
1867. Mimesa cressonii Packard, Proc. Ent. Soc. Phil., V1, p. 405. 
1898. Psen cressoniti Fox, Trans. Amer. Ent. Soc., XXV, p. 12. 
1916. Muimesa cressoni Mickel, Trans. Amer. Ent. Soc., XLII, p. 421. 
Males 59, females 27: Lincoln (5), Fairmont (2), West Point 
(1), Broken Bow (2), Oxford (2), Haigler (1), Imperial (1), 
Ogallala (3), Brown county (1), Mitchell (4), Glen (40), Har- 
rison (19), Monroe Canyon (1) and Warbonnet Canyon (1) ; 
June 10 to October; visits flowers of Helianthus sp. and Gutier- 
rezia sarothrae. 
Mimesa punctata (Fox). f 
1898. Psen punctatus Fox, Trans. Amer. Ent. Soc., XXV, p. 9. 
Females 2: Monroe Canyon (2) ; August 19, 1912, and August 
20, 1908 (R. W. Dawson). 
Mimesa mellipes (Say). 
1837. Psen mellipes Say, Bost. Journ. Nat. Hist., I, p. 360. 
1898. Psen mellipes Fox, Trans. Amer. Ent. Soc., XXV, p. 8. 
Males 1: Lincoln, May 16, 1908. 
Mimesa mandibularis H. S. Smith. 
1908. Mimesa mandibularis H. S. Smith, Univ. Nepr. Stupres, VIII, 
Pp. 392. 
Females 3: Glen (1) and Monroe Canyon (2); August 17 to 
St. 
The two specimens from Monroe Canyon have been collected 
since Smith described the species in 1908. 
361 
