Sphecoidea of Nebraska 135 
Males 102, females 15: Omaha (5), Beatrice (1), Lincoln (6), 
Red Cloud (1), Culbertson (1), Carns (1), Brown county (1), 
Haigler (1), Mitchell (73), Gering (1), Crawford (2), Harrison 
(17), Glen (4) and Monroe Canyon (1) ; June 18 to August 26; 
visits flowers of Melilotus alba, Chamaecrista fasciculata, Helian- 
thus sp., Cleome serrulata, Euphorbia marginata and Mentzelia 
sp. 
Cerceris rufinoda crucis Viereck and Cockerell. 
1904. Cerceris rufinoda crucis Viereck and Cockerell, Journ. New 
York Ent. Soc., XII, p. 139. 
1912. Cerceris rufinoda crucis Banks, Ann. Ent. Soc. Amer., V, p. 26. 
Females 2: Omaha (1) and Monroe Canyon (1); August 7 
and 14; visits flowers of Chamaecrista sp. 
Cerceris argia Mickel. 
1916. Cerceris argia Mickel, Trans. Amer. Ent. Soc., XLII, p. 412. 
Females 1: Lincoln, August 5, 1904, on Solidago sp. 
Cerceris echo Mickel. 
1916. Cerceris echo Mickel, Trans. Amer. Ent. Soc., XLII, p. 412. 
Females 41: Omaha (4), Curtis (1), Mitchell (21), Glen (4), 
Harrison (8) and Monroe Canyon (2); July 13 to August 29;. 
visits flowers of Melilotus alba, Chamaecrista fasciculata, Cleome 
serrulata, Solidago sp. and Helianthus sp. 
Cerceris finitima Cresson. 
1865. Cerceris finitima Cresson, Proc. Ent. Soc. Phil., V, p. 122. 
1912. Cerceris finitima Banks, Ann. Ent. Soc. Amer., V, p. 27. 
Males 38, females 28: Rulo (1), Omaha (11), Lincoln (8), 
West Point (5), South Sioux City (2), Neligh (1), Ogallala 
(1), Bridgeport (2), Mitchell (13), Harrison (13), Glen (9) 
and Monroe Canyon (1) ; June 17 to August 31; visits flowers of 
Chamaecrista sp., Solidago canadensis, Melilotus alba, Asclepias 
-sp., Euphorbia sp. and Cleome serrulata. 
Cerceris finitima nigroris Banks. ‘ 
1912. Cerceris finitima nigroris Banks, Ann. Ent. Soc. Amer., V, p. 27. 
Males 12: Omaha (2), Haigler (1), Bridgeport (2), Mitchell 
(3) and Harrison (4); July 8 to August 25; visits flowers of 
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