2 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 75 



debted indeed for this assistance. Names of collectors in the follow- 

 ing list are given with initials, except in the case of the six most 

 frequently mentioned. These are: H. S. Barber, Otto Heidemann, 

 H. H. Knight, W. L. McAtee, Theodore Pergande, and E. A. 

 Schwarz. 



Subfamily Phylinae 



Genus STHENARUS Fieber 



STHENARUS MCATEEI Knight 



Odenton, Md., July 12, 1914, July 29, 1917, on foliage of wild 

 grape, McAtee. 



Genus CHLAMYDATUS Curtis 



CHLAMYDATUS SUA VIS Reuter 



Washington, D. C, August 27, 28, September 1, Heidemann ; July 

 25, August 6, 26, 1926, Knight; Beltsviiie, Md., August 14, 1914, 

 McAtee. 



CHLAMYDATUS ASSOCIATUS Uhler 



Beltsviiie, Md., July 3, 1926, McAtee. 



Genus LEUCOPOECILA Renter 



LEUCOPOECILA ALBOFASCIATA Reuter 



Washington, D. C, June 11, November 11, 1886, Pergande; Sep- 

 tember 13, 1913, McAtee; Arlington Farm, Va., October, 1921, P. L. 

 Ricker, abundant and destructive at this time; Virginia, October 5, 

 Pergande. 



Genus PLAGIOGNATHUS Fieber 



PLAGIOGNATHUS POLITUS var. POLITUS Uhler 



Generally distributed and common; season May 18 to October 11 ; 

 usually on foliage of shrubs and weeds, including Atnbrosia trifida^ 

 but has been taken on flowers of Ceanothu^, Yiwca, Leonurus car- 

 diaca^ and Cornus wnomdMin. P. I. 



PLAGIOGNATHUS POLITUS var. FLAVEOLUS Knight 



Fairly common, apparently a fall form, September 4-November 3 ; 

 has been taken on flowers of Bidens trichosferma. P. I. 



PLAGIOGNATHUS NIGRONITENS Knight 



Vienna, Va., July 11, 25, 1926, Knight; Beltsviiie, Md., July 3, 

 1926, Knight. 



PLAGIOGNATHUS TINCTUS Knight 



Plummer Island, Md., June 7, 1914, McAtee; Eastern Branch near 

 Bennings, D. C, June 7, 1914; Four-mile Run, Va., May 31, 1914, 

 A. Wetmore; Glencarlyn to mouth of Four-mile Run, Va., June 17, 

 1914, McAtee. 



