PROC. ENT. SOC. WASH., VOL. 22, XO. ~, OCT., 1 920 161 



Coleophora atromarginata Braun. 



Braun. Cin. Soc. Nat. Hist., Vol. 21, p. 166, 1914. 



Syn. C. currucipennella Walsingham (nee Zeller). Trans. Ent. Soc. Lond., 

 p. 430, 1882. 



Dyar Cat. No. 6014. 



This is our common oak-feeding pistol case bearer which Wal- 

 singham and others have identified as the European C. curruci- 

 pennella Zell. It is somewhat variable in size, ranging anywhere 

 from 10.5 to 14.5 mm. Miss Braun's description was drawn 

 from a unique and rather small specimen. The average size is 

 about 13 mm. alar expanse. There are consistent differences 

 both in larval cases and adult moths between our American 

 species and the true curntcipennella. In the latter the flaps of 

 the cases are as a rule larger and more delicate and the upper 

 edge of the barrel is rougher, containing one or more projections. 

 In the American species the barrel is smooth. In currucipennella 

 the yellow stripes on the forewings of the moth are continuous 

 from the base of the wings, while in atromarginata more than half 

 the wing from the base is white without appreciable markings, 

 the yellow stripes becoming indistinct only in the apical portion 

 where they shade into a dark brown at the tip. The name cur- 

 rucipennella should be dropped from our lists as this form does 

 not occur in the United States. 



Coleophora atlantica, n. sp. 



Palpi white faintly streaked with golden brown above; second joint tufted. 

 Antennae white faintly annulated beyond second joint with light golden 

 brown; base covered above by large white projecting tuft; under side of tuft 

 shaded with pale golden brown. Face, head and thorax silvery white. Fore 

 wings silver white, lightly irrorated beyond middle with brownish scales; 

 costal cilia white; cilia at apex pale, dull fuscous; dorsal cilia grayish golden. 

 Hind wings lead gray, cilia concolorous with a somewhat more golden fuscous 

 tinge on dorsum near apex. Abdomen white dusted with fuscous; anal 

 tuft silvery white. Tips of tarsi faintly annulated with golden brown. 



Alar Expanse. 11-15 mm. 



Locality. Eastern U. S. (Type locality, Falls Church, Va.) 



Food Plant. Prunus serotina. 



Type. Cat. No. 22S05, U. S. N. M. 



Described from six reared and four collected specimens (males 

 and females) from Falls Church, Va. (Heinrich reared, five speci- 

 mens from Prunus serotina under Hopk. U. S. Nos. 11135a, 

 12127a, and 13432a; June 7 to July 3), East Aurora, N. Y. (Wm. 

 Wild, reared one specimen July 14), Washington. D. C. (August 

 Busck, one specimen, July), Oak Station, Pa. (Fred. MarlofT, 

 one specimen, July 1), Trenton, Ontario, Canada. (Evans, two 



