12 BULLETIN 133, UNITED' STATES NATIONAL MUSEUM 



3. DICHRORAMPHA BRITANA (Busck) 

 (Fig. 275) 



Hemvmene hritana Busck, Proc. Biol. Soc. Washington, vol. 19, 1906, p. 



178. — Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 



7263, 1917. 

 Hemimene alpinana Fernald (not Treitschke), in Dyar List N. Amer. 



Lepid., no. 5290, 1903. 



A Pacific coast species resembling kana and with the same dis- 

 tribution. Differs chiefly in having termen of fore wing less slant- 

 ing. Has been confused with the European alpinana which it re- 

 sembles superficially, but from which it differs strikingly in shape 

 of harpe of male genitalia. 



Male genitalia figured from specimen in National Collection from 

 Goldstream, British Columbia (" 2-VI-21, E. H. Blackmore No. 

 417"). Female genitalia as in capltana. 



Distribution. — British Columbia, Oregon, California. 



Alar expanse. — 14—18 mm. 



Type. — In National Collection. 



Type locality. — Kaslo, British Columbia. 



4. DICHRORAMPHA SIMULANA (Clemens) 



(Fig. 276) 



Halonota simulana Clemens, Proc. Acad. Nat. Sci. Philadelphia, 1860, 

 p. 351. 



Dichrorampha aurisignana Ze,l.l.er, Verh. Zool.-bot. Ges. Wien, vol. 25, 

 1875, p. 319. 



Hemimene simulana Fernald, in Dyar List N. Amer. Lepid., no. 5289, 

 1903. — Busck, Proc. Biol. Soc. Washington, vol. 19, 1906, p. 179.— 

 Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 7255, 

 1917.— Forbes, Memoir 68, Cornell Univ. Agr. Exp. Sta., 1924, p. 389. 



An Eastern species resembling hritana, but with quite different 

 male genitalia; the chitin of the outer margin of the basal opening 

 of the harpe being produced into a short tongue or spur. In all the 

 other species of the costal-fold group (with the exception of hit- 

 tana) this outer margin is evenly rounded. The pattern and color 

 are somewhat variable; specimens from Mount Washington having 

 a much fainter dorsal patch and considerably darker shading on 

 outer half of forewing. They may possibly represent a distinct 

 race; but I do not feel justified in so designating them at this time. 



Male genitalia figured from specimen in National Collection from 

 Ottawa, Canada (C. H. Young, " 7-VIII-1906 ") . Female genitalia 

 similar to those of Mttana. 



Distribution. — Virginia, District of Columbia, Pennsylvania, New 

 Jersey, New Hampshire, Maine, Ontario, Quebec. 



Alar expanse. — 11-16 mm. 



