404 PROCEEDINGS OF THE NATIONAL MUSEUM. 



TIPULA BELLA Locw. 



Abundant ; extreme dates of collection, April 15 and September 29 ; 

 in copula, April 15, 18, May 2; is attracted to light. P. I. 



TIPULA BICORNIS Forbes. 



Forest Glen, Maryland, May 21, 26, 1914, at light, O. Heidemann; 

 College Park, Maryland, May 25, 1913, F. Knab; Four-mile Eun, 

 Virginia, May 31, 1914, McAtee. 



TIPULA CALOPTERA Loew. 



Pimmit Eun, Virginia, September G, 1908, F. Knab; Plummers 

 Island, June 8, 1913, McAtee; Cabin John Bridge, Maryland. May 

 20, 1903, W. V. Warner. 



TIPULA COLLARIS Say. 



Locally common in springy places during its rather short season, 

 April 8 to 28 ; in copula, April 18. V. P. I. 



TIPULA CUNCTANS Say. 



An autumnal species; Ingleside, Virginia, October 14, 1917, Dead 

 Eun, Virginia, October 28, 1919, McAtee; Falls Church, Virginia, 

 October 19, Banks; Eosslyn, Virginia, October 6, 1912, F. Knab; 

 Plummers Island, October 9, 1906, McAtee ; October 13, 1906, A. K. 

 Fisher; Eastern Branch. District of Columbia, October 22, 1914, 

 E. C. Shannon. 



TIPULA DEJECTA Walker. 



Another species that has been taken only in April, 6 to 25 ; in 

 copula, 16; various localities in Virginia, and Plummers Island. 



* TIPULA DIETZIANA Alexander. 



Numerous in its season; April 2 to May 2; in copula, April 20 and 

 25 ; has been taken on plum flowers. P. I. 



- TIPULA ELUTA Loew. 



Frequent; dates of capture range from April 25 (in copula) to 

 August 29. P. I. 



* TIPULA FRAGILIS Loew. 



The type specunen, a female, of Tipula suspecfa, Loew, from the 

 District of Columbia apparently is a T. fragilis, although possibly 

 2'. ignohilis Loew. 



* TIPULA FRATERNA Loew. 



Scotts Eun, Virginia, July 25, 1915, Alexander and McAtee; Four- 

 mile Eun, Virginia, May 31, 1914, McAtee. 



