1918] Johnson — Notes on the Species of the Genus Dioctria 103 



noted a more extended distribution of some of the species and also 

 the fact that two of the names used are preoccupied. In calHng 

 Mr. Banks' attention to this he said that he did not have access to 

 the catalogues at the time and desired me to corrsct these in con- 

 nection with my notes. 



Dioctria brevis Banks. 



This species has been taken by the writer at Mt. Tom, Mass., 

 July 14, 1905; Delaware Water Gap, N. J., July 11, 1898, and 

 Aquia Creek, Va., May 24, 1896. 



Dioctria banksi nom. nov. 



D. longicornis Banks, Psyche, xxiv, 118, 1917, not Meigen, 

 1820. Four specimens of this species were collected near Long 

 Branch, N. J., June 9, 1913. A specimen from Philadelphia, Pa.> 

 (June 22, 1893), is also in my collection. 



Dioctria sackeni Williston. 



A specimen of what is undoubtedly the female of this species was 

 taken by the writer near Ricketts, North Mt., Pa., June 9, 1898, 

 at the same time and place that a male w^as also captured. It has 

 the bright yellow tomentum of the face, front and thorax, and the 

 yellow legs of the male, but the wings are uniformly hyaline with a 

 slight yellowish tinge near the base. 



Dioctria media Banks. 



A single specimen of this species from Seattle, Wash., collected 

 years ago by the late Professor O. B. Johnson is in my collection. 



Dioctria henshawi nom. nov. 



D. flavipes Banks, Psyche, xxiv, 119, 1917, not Meigen, 1804. 

 The name flavipes being preoccupied in this genus, the species is 

 dedicated to Mr. Samuel Henshaw who collected the type at 

 Yakima, Wash., July 2, 1882. 



