20 
Psyche 
[February 
THE DISTRIBUTION OF MUSCINA PASCUORUM 
MEIGEN IN AMERICA. 
By Charles W. Johnson, 
Boston Society of Natural History. 
The last report on the distribution of this fly in North 
America was for 1923 (Psyche, vol. 31, p. 17, Feb. 1924). 
During 1924 the fly was apparently quite scarce in the 
vicinity of Boston and no additional records bearing on its dis- 
tribution were received. Mr. R. C. Shannon however reported 
one specimen (?) from Plummers Island, Md., Nov. 11, 1923 
(Ent. News, vol. 35, p. 104, March 1924) and common in cupolas 
(all females) at South Poland, Maine, May 1924 (Proc. Ent. 
Soc. Wash., vol. 26, p. 146, May 1924). 
During the fall of 1925 after the rains in September it again 
appeared in eastern Massachusetts and I began to receive reports 
of its entering houses in considerable numbers. During the first 
week in October a few appeared each day on the windows at the 
museum and at my home in Brookline. Mr. N. P. Woodward 
sent me specimens from Worcester, Mr. D. S. Lacroix reported it 
common at the State Cranberry Station, East Wareham. Mrs. 
Hathaway sent me specimens on October 10 from East Bridge- 
water. Dr. Francis Harper collected a number at Natick, Oc- 
tober 16. Mr. W. L. Maxcy sent me a number from Still River, 
October 20 and Mr. F. W. Walker found it common in a cottage 
at Middleton, Nov. 15. My friend, the late Lewis B. Woodruff 
wrote me Oct. 19 that it was plentiful on his windows at Litch- 
field, Conn. Mr. N. K. Bigelow informs me that it is now com- 
mon in parts of Ontario and sent me specimens collected at Port 
Hope, Sept. 5, 1925. 
Dr. A. H. Sturtevant in a letter dated October 17, 1925 says- 
“I have just noticed that your friend Muscina pascuorum is now 
common on the windows here. I have never seen it in New 
York [City] before,* but cannot guarantee that it has not been fairly 
common before since I do not check up carefully on Calypterse.” 
