412 PROCEEDINGS OF THE NATIONAL MUSEUM^ 



DICRANOYMIA HAERAETiCA Osten Sacken. 



Glencarlyn, Virginia, June 4, 11, 1911, F. Knab, 



•DICRANOYMIA IMMODESTA Osten Sacken. 



Common ; season May 1 to October 25 ; comes to light. P. I. 



* DICRANOYMIA LIBERTA Osten Sacken. 



Very common; dates of collection range from April 22 to Octo- 

 ber 25 ; is frequently attracted to light. P. I. 



DICRANOYMIA LONGIPENNIS Schuminel. 



Beltsville, Maryland, October 22, 1915, McAtee. 



• DICRANOYMIA MACATEEI Alexander. 



Great Falls, Va., August 11, 1915, October 3, 1915; Dead Run, 

 Virginia, May 10, 1916, July 14, 1915; Plummers Island, Maryland, 

 May 24, 1914, McAtee. 



DICRANOYMIA MORIOIDES Osten Sacken. 



Dead Run, Virginia, May 21, 1914, R. C. Shannon; Cabin John 

 Bridge, Maryland, May 16,"^ 1909, F. Knab. 



* DICRANOYfillA PUBIPENNIS Osten Sacken. 



Common along streams; season, April 20 to October 3. V. P. I. 



DICRANOYMIA PUDICA Osten Sacken. 



Falls Church, Virginia, May 21, N. Banks. 



DICRANOYMIA RARA Osten Sacken. 



Common ; season May 23 to October 23 ; bred from rotten willow,. 

 Plummers Island, June 15, 1914, IT. S. Barber. 



DICRANOYMIA SIMULANS Walker. 



Common along Piedmont streams. May 5 to November 23. P. I. 



DICRANOYMIA STULTA Osten Sacken. 



(irlencarlyn, Virginia, June 17, 1917, Laurel, Maryland, May 30, 

 1919, McAtee. 



Genus LIMNOBIA Meigeiu 



KEY TO SPECIES. 



1. Cross vein r at the tip of Ri 2: 



Cross vein r removed from tlie tip of Ri 5. 



2. Knobs of tlie lialteres blacli 3.^ 



Knobs of tlie halteres pale at the tips 4. 



3. Femora yellow, the extreme tips narrowly dark brown ; wings yellowish with 



three eye-like markings L. trioceUata (p. 413). 



Femora with a brown band before the dark tips ; pattern of the wings 



not ocellate; a row of small dark brown spots in cell R__7v. fallaw (p. 413). 



