ART. 19. AMERICAN BEES OF THE GENUS HALICTUS — SANDHOUSE. 43 

 HALICTUS ALBIPENNIS Robertson. 



Colorado: 1 female, Boulder, May 21, 1922 (Elsie M. Foster); 1 

 female, June 18, at Petalostemon oligophyllus (T. and W. Cockerell). 



HALICTUS BRUNERI Crawford. 



Iowa: 2 females, Vinton, June 29, 1922 (Sandhouse). 



HALICTUS PERPUNCTATUS Ellis. 



Colorado: 1 female, Boulder, May 20, 1922 (F. D. Becker). 



HALICTUS CRESSONII Robertson. 



New York: 1 female, Garrison (Eleth Cattell).* 



HALICTUS VERSATUS Robertson. 



Iowa: 1 female, Vinton, June 29, 1922 (Sandhouse). 



HALICTUS OBLONGUS Lovell. 



Colorado: 2 females, Boulder, May 9, 1907, at flowers Taraxacum 

 (S. A. Rohwer); 1 male. Peaceful Valley, August (Cockerell). 



New Mexico: 3 females, Santa Fe, July and August, one on Pent- 

 stemon Cockerell Nos. 3825, 4227, and 4394; 1 female, Pecos, June 

 24 (W. P. Cockerell); 1 female. Las Vegas, April 20, at flowers of 

 wild plum (Cockerell). 



Connecticut: 1 male, Colebrook, September 1 (W. M. Wheeler). 



HALICTUS NYMPHAEARUM Robertson. 



Massachusetts: 1 male, Woods Hole, (Eleth Cattell). 



HALICTUS HORTENSIS Lovell. 



Massachusetts: 1 male. Forest Hills, May 14 (collector not known) . 

 New York: 1 female, Garrison, (Eleth Cattell). 

 Virginia: 3 males. East Falls Church, July 16-20 at flowers of 

 Daucus carota and Oicuta maculata (S. A. Rohwer). 



HALICTUS INCOMPLETUS Crawford. 



New Mexico: 1 male, Aztec, September 19, 1898 (C. E. Mead). 



