PROC. ENT. SOC. WASH., VOL. 20, NO. 9, DEC., 1918 197 



C. carbonarius Walker. Common; season, May 28 to July 

 14; a male was taken on chinquapin flowers, at Falls Church, 

 Va., May 30 by Nathan Banks, and females by C. T. Greene, 

 June 12. (V. P. I.) 



C. celer Osten Sacken. Common; extreme dates of collection, 

 May 22 and July 1. (V. P. I.) 



C. cuclux Whitney. Beltsville, Md., May 28, 1916 McAtee; 

 June 17, 1917, Walton; Branchville to Beltsville, June 4, 1914, 

 L. 0. Jackson. 



C. dimmocki Hine. Great Falls, Va., July 10, Wm. Palmer; 

 Riverdale, Md., June 15, 1916, F. R. Cole. 



C. fallax Osten Sacken. Common; season, June 9 to July 

 17. Males have been taken at Falls Church, Va., June 9 and 

 19, and both sexes on flowers of Ceanothus, Nathan Banks. A 

 female was captured at light, July 10, 1912, on Plummers Island, 

 Md., by E. A. Schwarz and H. S. Barber. 



C. brunneus Hine. New Alexandria, Va., July 1907, Wm. 

 Palmer; another at Falls Church, Va., no date, Nathan Banks. 



C. lugens Wiedemann. Abundant; extreme dates of collection 

 June 3 and August 5. A female was taken on Ceanothus flowers, 

 at Dead Run, Va., June 18, 1914, R. C. Shannon. (P. I.) 



C. moechus Osten Sacken. Abundant; season May 22 to 

 August 25. Males were collected at Great Falls, Va., May 22, 

 June 5, 19 and 21, Nathan Banks; June 11, 1910, Wm. T. Davis; 

 and one was taken at light on Plummers Island, Md., June 8, 

 1914, E. A. Schwarz and H. S. Barber. 



C. montanus Osten Sacken. Chain Bridge, Va., June 14, 

 S. A. Rohwer; Washington, D. C., June 7, 1900, June 9, 1899, 

 and another specimen without date. 



C. niger Macquart. Very abundant; extreme dates, May 14 

 and July 7. The female has been taken on chinquapin flowers, 

 Falls Church, Va., June 2 and on Ceanothus June 16, Nathan 

 Banks," June 12, C. T. Greene; both sexes were collected on 

 flowers of Apocynum medium, along Four-mile Run, below 

 Cowden, Va., June 11, 1916, McAtee. (P. I.) 



C. obsoletus Wiedemann. Mt. Vernon, Va., July 13, 1917, 

 McAtee; Falls Church, Va., July 12, female at hone}- dew on 

 tulip tree, Nathan Banks; Vietch, Va., July 18, 1915; Four-mile 

 Run, Va., August 7, 1910, F. Knab; Eastern Branch near Ben- 

 nings, D. C., August 29, 1915; Washington, D. C., July 7, 1899. J. 

 S. Hine; July 5, August 19, 1911; Hyattsville, Md./ July 18, 190<). 

 F. Knab; July 4, 1899, J. S. Hine, Lakeland, Md., July 5, 1909. 

 F. Knab; Plummers Island, June 28, 1914, McAl-c. 



C. parvulus Daecke. Dead Run, Va., June 23, Nathan Banks ; 

 Beltsville, Md., June 18, 1916, McAtee, July 4, 1916, McAtcr. 

 Walton; July 6 and 14, 1916, F. R. Cole; July 13, 1912, McAtee. 



