The Sphegoidea of Nebraska TI 
~ county, McCook, Neligh, Haigler, Broken Bow, West Point, 
_ Ashland, and Lincoln. Flies from June to October. 
Chlorion bifoveolatum (Taschenberg). 
1869. Priononyx bifoveolata Taschenberg, Zeitschrift fiir ges. Natur- 
wissenschaft, xxxiv, p. 408. 
1906. Chlorion (Priononyx) bifoveolatum H. Fernald, Proceedings of 
‘the U. S. National Museum, xxxi, p. 346. 
One very small specimen of this species from Sioux county, 
determined for me by H. T. Fernald. 
Chlorion thomae (Fabricius). 
1775. Sphex thomae Fabricius, Entomologiae Systematicae, p. 346. 
1906. Chlorion (Priononyx) thomae H. Fernald, Proceedings of the 
U. S. National Museum, xxxi, p. 342. 
Agate, Gering, Lincoln; July and August. The latter speci- 
men, determined by Professor Fernald, seems to approach the 
above species. The two are very closely allied, and the charac- 
ters given in the foregoing table are not always constant, so that 
it is often difficult to distinguish between the two. 
Chlorion harrisi H. Fernald. 
1856. Sphex apicalis F. Smith, Catalogue of Hymenoptera in the Brit- 
ish Museum, iv, p. 262. 
1906. Chlorion (Isodontia) harrisi H. Fernald, Proceedings of the 
U. S. National Museum, xxxi, p. 359. 
Quite common throughout the entire state. Glen, Broken Bow, 
West Point, Cedar Bluffs, Lincoln, Weeping Water. Flies from 
June to August. 
Chlorion elegans (F. Smith). 
1856. Sphex elegans F. Smith, Catalogue of Hymenoptera in the Brit- 
ish Museum, iv, p. 262. 
1906. Chlorion (Isodontia) elegans H. Fernald, Proceedings of the 
U. S. National Museum, xxxi, p. 361. 
Five specimens of this pretty species from Glen, during Au- 
gust, taken for the most part flying along the high adobe buttes. 
This is the most eastern record, excepting a doubtful one from 
Florida. | 
Chlorion lucae (Saussure). 
1867. Sphex lucae Saussure, Reise d. Novara, Hymenoptera, p. 41. 
1906. Chlorion (Proterosphex) lucae H. Fernald, Proceedings of the 
U. S. National Museum, xxxi, p. 365. 
333 
