84 Clarence E. Mickel 
Sphex urnarius (Dahlbom). 
1843. Ammophila urnaria (Klug) Dahlbom, Hym. Eur., I, p. 14. 
1903. Ammophila urnaria Melander, Psyche, X, p. 161. 
1908. Sphex vulgaris H. S. Smith, Univ. Nesr. Stunies, VIII, p. 330 
(in part). 
Males 88, females 41: Rulo (3), Omaha (39), Child’s Point 
(1), Louisville (17), Meadow (1), South Bend (15), Ashland 
(1), Roca (1), Lincoln (17), Cedar Bluffs (3), West Point (5), 
South Sioux City (2), Maskell (2), Fairmont (2), Oxford (1), 
Glen (1), Monroe Canyon (3), Warbonnet Canyon (2) and 
Sioux county (7); May 22 to October 11; visits flowers of 
Solidago canadensis, Symphoricarpos symphoricarpos, Solidago 
glaberrima, Solidago sp., Asclepias incarnata, Vernoma fascicu- 
lata, Chamaecrista fasciculata, Aster sp. and Amorpha canescens. ° 
Sphex nigricans (Dahlbom). 
1843. Ammophila nigricans Dahlbom, Hym. Eur., I, p. 14 
1903. Ammophila nigricans Melander, Psyche, X, p. 161. 
Males 73, females 44: Omaha (36), Child’s Point (1), Louis- 
ville (17), Meadow (7), Weeping Water (1), South Bend (19), 
Ashland (5), Lincoln (20), Cedar Bluffs (3), West Point (6), 
Maskell (3), Concord (2) and Curtis (1) ; June 13 to September 
14; visits flowers of Melilotus alba, Chamaecrista fasciculata, 
Petalostemum purpureum, Solidago glaberrima, Symphoricarpos 
symphoricarpos, Amorpha canescens and Ceanothus americanus. 
Sphex procerus (Dahlbom). 
1843. Ammophila procera Dahlbom, Hym. Eur., I, p. 15. 
1856. Ammophila gryphus F. Smith, Cat. Hym. Brit. Mus., IV, p. 222. 
1903. Ammophila procera Melander, Psyche, X, p. 159. 
Males 65, females 46: Omaha (7), Weeping Water (1), 
Meadow (1), Ashland (1), South Bend (17), Louisville (25), 
Lincoln (10), Cedar Bluffs (7), West Point (2), Maskell (3), 
Fairmont (2), Halsey (1), Mitchell (5), Glen (6), Monroe 
Canyon (6) and Sioux county (3) ; June 20 to October 11; visits 
flowers of Solidago rigida, Amorpha canescens, Asclepias tuber- 
osa, Melilotus alba, Petalostemum purpureum, Vernonia fascic- 
ulata, Symphoricarpos symphoricarpos, Solidago glaberrima, 
Chamaecrista fasciculata and Aster sp. 
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