140 U. S. NATIONAL MUSEUM BULLETIN 2 1 6 part 3 



(Arlington, Black Pond in Fairfax Co., Chain Bridge near McLean, 

 Dead Run in Fairfax Co., Dyke, Falls Church, Galax, Glencarlyn, 

 Great Falls, Passage Creek, Rosslyn, and Skyline Drive); West Vir- 

 ginia (Bohvar and Cheat Mt. at 2,000 ft. in Randolph Co.); and 

 Wisconsin (Madison). 



Dates of collection are from mid-spring to mid-fall, starting in 

 early April in Florida and central Georgia; in late April along the 

 fall line of the South Atlantic States; early May in the vicinity of 

 Washington, D.C.; mid-May near Philadelphia, Pa.; and late May 

 near Ithaca, N.Y, Disappearance in the fall is with the beginning 

 of frost, in the vicinity of Washington, D.C., around October 10 to 18. 

 Unusually late records are October 10 at Gloucester, Mass., and 

 November 15 at Takoma Park, Md. 



Reared specimens include six lots from Polychrosis viteana at 

 scattered localities and the following individual host records : 9, from 

 Ancylis divisana, College Park, Md., Aug. 9, 1934. cf , from Ancylis 

 comptana, Ames, Iowa, E. W. Dunnam. cf, from Ancylis comptana, 

 Washington, D.C., Aug. 5, 1910, Chittenden. We find the species 

 in the undergrowth of mesophytic or damp deciduous woods, usually 

 flying among or alighting on foliage at 1 to 2 meters height. It is 

 often very common. 



This species occurs in the AUeghanian, Carolinian, and Austrori- 

 parian faunas. 



3. Ischnus laurae, new species 



Front wing of male 4.0 to 4.1 mm. long, of female 4.0 mm. long; 

 differs structurally from /. cinctipes in having the tyloids on only 

 2 or 3 segments and sharp, in line with long axis of the segments, and 

 extending about 0.8 the length of the segments; mesoscutum less dis- 

 tinctly punctate; mesoplem-um and metapleurum a little more 

 sharply wrinlded; apical carina of propodeum a little weaker (in- 

 distinct submedially) ; and punctures on second tergite averaging 

 a little larger and closer. 



Black, Clypeus, mouth parts, scape, and pedicel fulvous, the 

 pedicel infuscate above; base of female flagellum dusky fulvous; fla- 

 gellum of both sexes with a white band, the band of female brown 

 below; propleurum of male black, of female mostly fulvous; pro- 

 notum of male white along its front and lower edges, on hind corner, 

 and sometimes along upper edge; pronotum of female white anteriorly, 

 along upper edge, and broadly along lower edge; tegula, subtegular 

 ridge, scutellum, postscutellum, and small spot on mesopleurum next 

 to middle coxa, white or whitish; front and middle legs fulvous, their 

 tarsi brownish apically, their coxae and trochanters stramineous; 

 hind coxa, trochanters, and femur fulvous, the apical 0.15 of the femur 

 weakly infuscate; hind tibia dusky fulvous, more strongly infuscate 



