22 . Clarence E. Mickel 
1908. Nysson simplicicornis H. S. Smith, Univ. Nesr. Stupies, VIII, 
Dp. 340. 
Males 2: Glen, August 20, 1906 (H. S. Smith). 
Nysson plagiatus Cresson. 
1882. Nysson plagiatus Cresson, Trans. Amer. Ent. Soc., 1X, p. 276. 
1896. Nysson plagiatus Fox, Journ. New York Ent. Soc., IV, p. 13. 
Males 6, females 9: Omaha (9), Louisville (2), West Point 
(1), Haigler (1) and Glen (2); July 14 to August 30; visits 
flowers of Chamaecrista fasciculata. 
Nysson aequalis Patton. : 
1879. Nysson aequalis Patton, Can. Ent, XI, p. 212. 
1896. Nysson aequalis Fox, Journ. New York Ent. Soc., IV, p. 13. 
Males 3, females 2: Omaha (2), South Sioux City (1) and 
West Point (2); July 11 to August 13; visits flowers of Meli- 
lotus alba. 
Nysson angularis H. S. Smith. 
too8. Nysson angularis H. S. Smith, Univ. Nesr. Stupies, VIII, p. 
340. 
Males 7: Omaha (5) and West Point (2) ; July 31 to August 
28; visits flowers of Solidago rigida and Chamaecrista sp. 
Originally described from the two specimens taken at West 
Point, the Omaha material having been collected since. 
Nysson fidelis Cresson. 
1882. Nysson fidelis Cresson, Trans. Amer. Ent. Soc., 1X, p. 282. 
1896. Nysson fidelis Fox, Journ. New York Ent. Soc., IV, p. 15. 
Males 4, females 1: Monroe Canyon (1), Sowbelly Canyon 
(3) and Warbonnet Canyon (1) ; June 23 to August 19. 
Paranysson Guerin 
Paranysson texanus (Cresson). 
1872. Nysson texanus Cresson, Trans. Amer. Ent. Soc., IV, p. 223. 
1896. Nysson texanus Fox, Journ. New York Ent. Soc., 1V, p. 12. 
Males 3, females 9: Omaha (2), South Bend (1), Ogallala (1), 
Mitchell (1), Harrison (1), Glen (5) and Monroe Canyon (1) ; 
June 24 to August 21; visits flowers of Chamaecrista fasciculata. 
350 
a 
