Vol. XXXl] ENTOMOLOGICAL NEWS 4! 



At Oakes and LaMoure, North Dakota, July 17-26, 1919, 

 several females were sucking nectar at flowers of Allionia 

 hirsuta, about an hour after sunset. Searching the evening 

 primroses for them I found females collecting pollen at Anogra 

 pallida. Careful watching of a single large plant each of Ano- 

 gra pallida and Onagra strigosa showed the flowers of the for- 

 mer beginning to open about 8:40 P. M. (sunset at 8:00), 

 those of the latter about 9:00 P. M. A female flew about both 

 plants 20 minutes before the flowers began to open. As soon 

 as those of Anogra began to open the bees were at work quite 

 as described at Megapterium. One female was taken collect- 

 ing at Onagra, but this did not seem to be visited as much as 

 Anogra. A brief visit at 9:30 showed no bees and the next 

 morning I found that no flowers of Anogra had opened after 

 that hour altho rather more of the Onagra flowers had opened 

 later than before that hour. A male was found in an Onagra 

 flower at sunrise on July 26th. Another had been taken in 

 the early forenoon at Sheldon, N. D., Aug. 21, 1918, at Heli- 

 anthns petiolaris. 



Cockerell (Trans. Am. Ent. Soc. v. 25, p. 185, 1898) has re- 

 corded this bee at flowers of Senecio douglassii and Pynis corn- 

 munis in New Mexico, and Crawford (Can. Ent., v. 35, p. 336, 

 1 93>) at Grindelia, but the time of day is not stated. At Man- 

 hattan, Kansas, Aug. 28, 1907, I took two females at flowers 

 of Mentzelia decapetala (an evening flowering plant) at 7:30 

 P. M. This plant is not native there. At Williston, North 

 Dakota, on Aug. 15, 1915, I visited this plant in the early 

 evening but found none of these bees and scarcely any of 

 other species. 



VISITS OF HALICTUS ABERRANS TO FLOWERS 



In North Dakota this bee is a regular visitor of Gaura coc- 

 cinea from an hour or more before sundown until dark. Both 

 sexes visit it for nectar altho the males visit chiefly the flowers 

 of Allionia. A few females have been taken collecting pollen 

 of Onagra strigosa in the forenoon and visiting several other 

 flowers for nectar both evening and morning or even well to- 

 ward mid-day. At Oakes on July 18, 2 females and 9 males 



