34 PSYCHE [April 



H. fasciatus Nyl. is a European species and probably does not occur in America. 

 According to Mr. J. C. Crawford "H. fasciatus" Robt. is the species described by 

 Provancher as H. constrictus. This is also doubtless the bee recently described by 

 Vachal as H. nearcticus. 



The female has been taken on Salix Bebbiana, May 13; Ogon ])lum (to which 

 it is a common visitor), IVIay 29; Eupatorium perfoliatum, Aug. 24; and Leontodon 

 autumnalis, Sept. 6; the male on Aralia hispida, July 27-30; and Solidago, Aug. 17. 

 A common and widely distributed species, easily recognized by the dull greenish 

 color, and the length of the third submarginal cell ecpialling tAvice that of the second 

 submarginal. 



Halictus lerouxii Lep. 



1841 Halictus lerouxii Lep. 9, Hist. nat. Insect. Hym. 2:272. 



1898 Halictus lerouxii Robt. c^, Trans. Ac. Sci. St. Louis, S: 44. 



The female specimens were collected on Salix discolor, Apr. 30; S. Bebbiana, 

 May 13; garden plum, May 28; Carduus arvensis, Aug. 7; Leontodon autumnalis, 

 Aug. 8; and many other plants; the male on x\ralia hispida, July 19; and Solidago 

 juncea, Aug. 4-11. A very common species. The females may often be seen on the 

 flowers of Lonicera Tatarica, collecting pollen, for their proboscides are not long 

 enough to reach the nectar, which is eagerly sought by bumblebees. This is our 

 largest species of Halictus, the females more closely resemble in the color of the 

 ]nibescence the forms from Colorado and Washington than those of Illinois. H. 

 parallelus Say and H. armaticeps Cr. do not occur here. 



(Ivasioglossum). 

 Halictus coriaceus Sm. 



1853 Halictus coriaceus Sm. ?, Cat. Hym. Brit. Mus. 1:70. 



1853 Halictus subquadratus Sm. cJ^, Cat. Hym. Brit. Mus. 1:72. 



This species is much less common than H. lerouxii; in most specimens of the 

 female there are white basal fasciae on abdominal segments 2-3, but not infrequently 

 segment 4 is also fasciate. Female taken on flowers of Salix Bebbiana, May 12; 

 garden blackberry, Jime 19; Carduus arvensis, Aug. 7; male on Carduus arvensis, 

 Aug. 7; and garden marigold, Sept. 12. 



