ART. S XOETH AMEKICAX EUCOSMIXAE — HEI^'■RICH 9 



Male genitalia similar to those of occipitana, but with cucullus per- 

 ceptably broader in proportion to rest of harpe. Figured from type. 



Alar expanse. — 20-26 mm. 



Type. — In collection Barnes. 



Paratypes. — Cat. No. 4120G, U.S.N.M., also in American Museum, 

 Canadian National, and Barnes collection. 



Type locality. — Sells Post Office, Indian Oasis, Pima County, Ariz. 



Food plant. — Unknown. 



Described from male type and six female paratypes all from the 

 type locality ("1-15 April" and "15-30 April, ' 1923,0. C. Polino;, 

 collector). I have also before me three females that I take to be the 

 same species from Loma Linda, Calif. 



In both pattern and genitalia this species is close to occipitana Zel- 

 ler, daemonicana Heinrich and reversana Kearfott. From the first it 

 difl'ers in its paler ground color and generally larger size; from the 

 two latter in the absence of a dark patch in outer area of cell and in 

 its obscure dark markings generally. From all three it differs in 

 details of genitalia. 



EUCOSMA SHASTANA (Walsingham) 



Figure 10 



The National collection now has an authentic specimen (male) of 

 this species (a Walsingham "type" from the Fernald collection). 

 The genitalia show this to be quite distinct from what I identified 

 as shastana and figured in my revision of the Eucosminae. In pat- 

 tern the two forms are similar except that the outer dorsal patch on 

 fore wing of the true shastana is decidedly excavate above and much 

 broader than the outer dorsal patch of my supposed shastana. The 

 latter, I am now convinced, is only a large variety of tahoensis Hein- 

 rich. I am describing it below under the varietal name suhditiva. 



Male genitalia of the Walsingham "type" figured. 



EUCOSMA TAHOENSIS SUBDITIVA, new variety 



Eucosma shastana Heinrich (not Walsingham), U. S. Nat. Mus. Bull. 123, 

 1923, pp. 79, 113, fig. 221. 



Palpus, face, head, and thorax ocherous fuscous; thorax with some 

 slight dusting of fuscous, and with scale tips of tegulae white. Fore 

 wing sordid whitish ocherous marked with fuscous; an outwardly 

 slanting fuscous bar from dorsum near base to top of cell, constituting 

 with a slight fuscous shading at extreme base the remains of a dark 

 basal patch ; on dorsum before tornus a large, irregularly triangular 

 fuscous patch; above and behind it in cell near its apex a slight 

 clouding of fuscous; below apex a conspicuous blotch of fuscous 

 shading; costa faintly clouded with fuscous and with several fine 

 darker fuscous striations to middle, beyond middle with four conspic- 

 uous fuscous dashes, interspaced with white and increasing in size 

 27135—29 2 



