50 Clarence E. Mickel 
crista fasciculata, Solidago sp., Melilotus alba, Cleome serrulata 
and Helianthus sp. 
These specimens show all the intergradations between the 
variety quadricolor, having the anterior two thirds of the meso- 
notum ferruginous, and cornutus, having the mesonotum entirely 
black. 
Oxybelus major Mickel. 
1916. Oxybelus major Mickel, Trans. Amer. Ent. Soc., XLII, p. 434. 
Males 1: South Bend, July 14, 1915 (E. M. Partridge) ; visits 
flowers of Melilotus alba. 
Oxybelus pectorosus Mickel. 
1918. Oxybelus pectorosus Mickel, Univ. Nebr. Studies, XVII, p. 321. 
Males 1: Mitchell, July 17, 1916 (C. E. Mickel) ; visits flowers 
of Melilotus alba. 
Oxybelus subulatus Robertson. 
1889. Oxybelus subulatus Robertson, Trans. Amer. Ent. Soc., XVI, 
p. 79. 
Males 16; Omaha (1), South Bend (1), West Point (1), South 
Sioux City (1), Concord (1), Mitchell (9), Glen (1) and Jim 
Creek (1); June 20 to August 17; visits flowers of Melilotus 
alba. 
Oxybelus albosignatus H. S. Smith. 
1908. O-xybelus albosignatus H. S. Smith, Univ. Nese. Stupies, VIII, 
Dp. 407. 
Females 5: West Point (1), Holt county (1), Curtis (1), 
Bridgeport (1) and Monroe Canyon (1); June 28 to August 20. 
The specimens from Curtis, Bridgeport and Monroe Canyon 
have been taken since the species was described. 
Oxybelus unicus Mickel. 
1918. Oxybelus unicus Mickel, Univ. Nebr. Studies, XVII, p. 323. 
Females 5: Mitchell (5); July 20 to 22. 
Oxybelus quadrinotatus Say. 
1824. Oxybelus quadrinotatus Say, Keating’s Narrat. Exped., II, App., 
p. 338. 
1889. Oxybelus quadrinotatus Robertson, Trans. Amer, Ent. Soc., 
XVI, p. 78. 
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