86 Clarence E. Mickel 
Sphex cressoni H. S. Smith. 
1865. Ammophila collaris Cresson, Proc. Ent. Soc. Phil., IV, p. 456. 
1903. Ammophila collaris Melander, Psyche, X, p. 159. 
1908. Sphex cressoni H. S. Smith, Univ. Nese. Stupies, VIII, p. 320. 
Males 5: Mitchell (1), Glen (2) and Harrison (2); July 12 
to September 5. 
Sphex pruinosus (Cresson). 
1865. Ammophila pruinosa Cresson, Proc. Ent. Soc. Phil., IV, p. 455. 
1903. Ammophila pruinosa Melander, Psyche, X, p. 160. 
Males 5, females 3: Mitchell (5), Harrison (1) and Glen (2) ; 
July 7 to September 4. 
Sphex extremitatus (Cresson). 
1865. Ammophila extremitata Cresson, Proc. Ent. Soc. Phil., IV, p. 
1903. pee extremitata Melander, Psyche, X, p. 161. 
Males 46, females 86: Rulo (1), Omaha (11), Louisville (2), 
Meadow (3), South Bend (3), Lincoln (95), Cedar Bluffs (2), 
West Point (2), Oxford (1), Curtis (3) and North Platte (1) ; 
May to October; visits flowers of Solidago glaberrima, Chamae- 
crista fasciculata, Achillea mullefolium, Petalostemum purpureum, 
Petalostemum violaceus, Medicago sativa, Cleome serrulata and 
Melilotus alba. 
Sphex politus (Cresson). 
1865. Ammophila polita Cresson, Proc. Ent. Soc. Phil., 1V, p. 458. 
1903. Ammophila polita Melander, Psyche, X, p. 160. 
Females 1: Sioux county, July. 
Sphex vulgaris (Cresson). 
1865. Ammophila vulgaris Cresson, Proc. Ent. Soc. Phil., IV, p. 458. 
1903. Ammophila vulgaris Melander, Psyche, X, p. 160. 
Males 142, females 78: Omaha (31), South Sioux City (4), 
Louisville (2), South Bend (2), Lincoln (55), Cedar Bluffs (5), 
Concord (1), Coburn (1), Fairmont (7), West Point (15), 
Neligh (1), Holt county (1), Broken Bow (1), Lexington (1), 
McCook (1), Haigler (2), North Platte (3), Ogallala (1), Hal- 
sey (2), Bridgeport (1), Kimball (1), Mitchell (5), Gordon 
Creek (1), Harrison (3), Pine Ridge (1), Glen (21), Monroe 
404 
