2 
Psyche 
[February 
regard to the matter and on November 1 he replied as follows 
‘‘It is Muscina pascuorum Meigen. I have compared it with 
European specimens determined by several authorities, and 
hence there is no doubt of what it is.” 
On October 27 I took two specimens on the window at my 
home in Brookline and on the 31st I received several specimens 
from Mrs. L. C. Marshall, of East Walpole, who said they were 
abundant in her house. On November 1, Dr. G. M. Allen 
captured a specimen in his house in Cambridge. On the 3d Dr. 
F. T. Lewis brought in seven specimens taken at Waban, Newton, 
and on the same date Dr. J. A. Cushman collected a specimen at 
Sharon. On the 7th a specimen was taken on a window at the 
Boston Society of Natural History, and on the 8th Dr. Lewis 
took a specimen at the Harvard Medical School, Boston. Thes 
single specimens indicate that they were by no means common 
in the city. On the 7th Dr. Cushman collected at Sharon nine 
specimens, among which was a male, the first I had seen. Dr 
Cushman then made three collections at Sharon, which are in- 
teresting in showing the relative proportion of this and the other 
species that normally frequent houses in the autumn. 
November 12, 46 Muscina pascuorum (all females), 30 M. 
assimilis, 19 Pollenia rudis, 10 Phormia reyina, 1 Cynomyia 
cadavorina, and 1 Musca domesiica. 
November 16, 22 M. pascuorum, 12 M. assimilis, 15 P 
rudis, and 2 P. regina. 
November 26, 13 M. pascuorum, IIP, rudis, and 5 P. regina 
Another interesting series showing the relative abundanc 
of this species was made by Mr. F, H. Walker in the attic of a 
summer cottage at Asbury Grove, Mass. November 9, he col- 
lected 275 Muscina pascuorum (2 males), 21 Pollenia rudis, 15 
Phormia regina, and 1 M. assimilis. Mr. Walker says: “I could 
have obtained thousands from neighboring cottages. The sky- 
light from which I obtained these flies measured 22 by 36 inches.” 
The following additional records show how abundant and 
generally distributed the species is throughout eastern Massa- 
