McAtee — Membraddae of the Vicinity of Washington, D. C. 127 



THELIA Amyot and Serville. 

 T. bimaculata Fabricius.— Common, breeding on black locust {Robinia 

 pseudacacia) ; adults have been collected from June 23 to Aug. 31. P. I. 



GLOSSONOTUS Butler. 

 G. godingi Van Duzee. — Beltsville, Md., June 8, 1919, L. O. Jackson; 



June 23, 1918, McAtee. 



HELIRIA Stal. 

 H. cristata Fairmaire. — Plummers Id., Md., June 8 1913, July 19, 26, 

 1914, McAtee. 



TELAMONA Fitch. 



A. Pronotal crest about as high in front as long. 

 B. Color darker, markings prominent. 



C. Posterior edge of crest pale with a dark vitta 



ainpelopsidis . 



CC. Posterior edge of crest broadly pale querci. 



BB. Color paler, markings nearly obsolete. 



D. Color (in cabinet) yellowish, plain in female 

 with some dark markings in male; supra- 

 humeral angles less prominent unicolor. 



DD. Color yellow with light-brown markings; 

 suprahumeral angles very prominent 



pruinosa. 

 AA. Pronotal crest much longer than high .._ ...westcotti. 



A genus in which the species are little understood; apparently, T. collinq 

 Walker, in addition to those here listed, should occur in the District of 

 Columbia region. 



T. ampelopsidis Harris. — Plummers Id., Md., June 7, 1914, June 20, 

 1909; McAtee; June 28, 1908, E. A. Schwarz ; Beltsville, Md., June 18, 1916, 

 July 4, 1915, McAtee. 



T. pruinosa Ball. — Plummers Id., Md., July 5, 1914, McAtee; Virginia 

 near Pis. Id., July 20, 1912, P. R. Myers. 



T. unicolor Fitch.— Plummers Id., Md., July 8, 1902, H. S. Barber; 

 Bladensburg, Md., June 1, 1919, L. L. Buchanan. 



T. westcotti Goding. (7". obsoleta Ball).— Beltsville, Md., June 14, 

 1914, June 23, 1918, McAtee. 



ARCHASIA Stal. 



A. Pronotal crest continuously curved throughout ..galeata. 



AA. Pronotal crest with a prominent sinuation in its posterior third 



belfragei. 



A. belfragei Stal.— Beltsville, Md., June 14, 1914, McAtee. 

 A. galeata Fabricius. — Beltsville, Md., June 23, 1918; Veitch, Va., June 

 17, 1914, McAtee; Great Falls, Va., July 6, 1913, A. Wetmore. 



