E. T. CRESSON, JR. 85 



antennae, in the broadly excavated frons with weak ridges, and ocellar tubercle 

 nearer the line of the post orbits. Length. — 6 mm. 



Ti/pc—d"; Little Falls, District of Columbia, August 22, 1915, 

 (W. L. McAtee), [U. S. N. M.]. Parahjpes.—l d' ; Plummer's 

 Island, Maryland, August 3, 1913, (W. L. McAtee). 1 9 ; same 

 locality, June 7, 1914, (W. L. McAtee). 1 cf ; Maryland near 

 Plummer's Island, July 4, 1914, (W. L. McAtee), [all Biol. Surv.]. 

 1 cf , 3 9 ; Plummer's Island, Maryland, June 3, 1914, (R. S. 

 vShannon). 1 9 ; Maryland near Phnnmer's Island, May 2, 

 1915, (R. C. Shannon), [all U. S. N. M.]. 



I also have before me two males and two females from the 

 following localities: Boykins, Virginia, June 10, [Johnson]; 

 Bladensburg, Maryland, May 10, (W. L. McAtee), [Biol. Surv.]; 

 Chain Bridge, District of Columbia, July 19, (C. T. Greene), 

 [U. S. N. M.]. 



Sepedon pusillus Loew 



1S.)9. Sepedon pusillus Loew, Wien. Ent. Alonats., iii, 299. 



In this and the following species the frons has a pair of median 

 prominent ridges, originating each side of the ocellar tubercle 

 antl extending well towards the anterior frontal margin; the 

 ocellar tubercle is situated well anterior to the line of the posterior 

 orbits. The second antennal joint is long and slender. The 

 hind cross-vein is fairly straight and vertical. 



The present species has no peculiar femoral development. The 

 female abdomen is narrow, with the fifth segment not noticeably 

 developed dorso-ventrally, also the genital segments are not 

 carinate although there is an acute angle above. Otherwise there 

 seems to l)e no important differential characters. 



Specimens Examined. — 22 cf , 12 9- 



New York: Ithaca, July 20 to August 4; McLean, July 2-3; Mud Creek, 

 Tompkins County, June 17-20; Slatterville to Caroline, June 14; Sea Cliff, 

 Long Island, [all Cornell]. 



Maryland: Plum Point, June 21, (W. L. McAtee), [Biol. Surv.]. 



District of Columbia: Eastern Branch near Bennings, September 7, 

 (W. L. McAtee), [Biol. Surv.]. 



Virginia: Bluemont, August 31; Great Falls, April 20 to October 4, (W. L. 

 McAtee), [all Biol. Surv.]. 



Georgia: Summerville, August 22, (J. C. Bradley), [Cornell]. 



Nebraska: Fremont, July 28, [Cornell]. 



California: Cayton, Sha.sta County, July 12, (E. P. VanDuzee), [Cal. 

 Acad. Sci.]. 



trans, am. ent. soc, xlvi. 



