92 Wisconsin Academy of Sciences, Arts, and Letters , 
Name of Species. 
Time of Flight. 
Flowers Visited for Pollen. 
33. Andrena viburnella, Graen. 
May 29—June 20 
Species of Viburnum and Rubus . 
34. Andrena wheeleri, Graen . 
June 8—June 18 
Oligotropic , Umbelliferce. 
35. Andrenaalbofoveata, Graen. 
June 9—June 16 
Oligotropic, Umbelliferce. 
36. Andrena roberlsonii, D. T... 
June 26—July 16 
Species of Krigia, Ceanothus and 
Rnus . 
37. Andrena peckhami, Ckll.... 
July 21—Aug. 8 
Oligotropic, Compositce. 
38. Andrena clypeonitens, Ckll. 
July 26—Aug. 20 
Oligotropic , Compositce. 
39. Andrena nubecula , Sm. 
July 26—Sept. 20 
Oligotropic, Compositce. 
40. Andrena alicice, Rob. 
July 27—Sept. 4 
Oligotropic, Compositce. 
41 Andrena helianthi, Rob .... 
Aug. 8—Sept. 12 
Oligotropic , Compositce. 
42. Andrena amerlcana, D. T... 
Aug. 17—Sept. 27 
lOligotropie. Compositce . 
43. Andrena solidag inis, Rob... 
Aug. 22 
Oligotropic , Compositce. 
44. Andrena asteris, Rob. 
Aug. 24—Oct. 8 
Oligotropic, Compositce. 
45. Andrena persimilis, Graen.. 
Aug. 24—Sept. 12 
Oligotropic, Compositce. 
46. Andrena parnassice, Ckll... 
Aug. 25—Sept. 26 
Oligotropic , Parnassia Carolina 
47. Andrena graenicheri , Ckll. 
Aug. 28—Sept. 23 
'ICCTKZ • 
Oligotropic, Compositce. 
The data relating to the time of flight, as contained in this 
table, enable us to construct a flight-curve for the family Andre- 
ninae as follows: 
April May June July Aug. Sept. Oct 
