NORTH AMERICAN EUCOSMINAE. 91 



26. EUCOSMA PERGANDEANA FLAVANA Fernald. 



(Fig. 236.) 



Eucosma pergandeana flavana Feenald, Can. Ent, vol. 37, 1905, p. 399. — 

 Baenes and McDonnough, Check List Lepid. Bor. Amer., no. 6917, 1917. 



The name flavana is merely a varietal designation for the western 

 specimens of pergandeana Fernald and probably should be rele- 

 gated to the synonomy as it does not seem to apply to any definite 

 race. I am holding it for the present as the specimens to which it 

 has been applied run into agrlcolana Walsingham. The two 

 species (if there are two) are mixed in all the collection. The geni- 

 talia does not help us for the same variations occur in both the Rocky 

 Mountains and Pacific coast specimens and do not correspond with 

 the patterns which are also equally variable. 



I have figured the genitalia of what I take to be a typical speci- 

 men from Pullman, Washington (C. V. Piper). 



Alar expanse. — 15-18 mm. 



Type. — In collection Fernald. 



Type locality. — Texas. 



Food plant. — Unknown. 



27. EUCOSMA AGRICOLANA (Walsingham). 



(Figs. 228, 288.) 



Paedisca agricolana Walsingham, Illus. Lepid. Heter. Brit. Mus., vol. 4, 1879, 



p. 42 ; Trans. Ent. Soc. Lond., 1884, p. 189. 

 Eucosma agricolana Feenald, in Dyar List N. Amer. Lepid., no. 5092, 1903. — 



Baenes and McDonnough, Check List Lepid. Bor. Amer., no. 6922, 1917. 



A variable and difficult species. Some of the Colorado specimens 

 show so little of the white ground color emphasized by Walsingham 

 in his description that they could be referred to more properly as 

 pale dull ochreous. In the American Museum of Natural History 

 there is a typical specimen from Yellowstone Park, Wyoming, cor- 

 responding closely to Utah specimens in the National Collection and 

 agreeing perfectly in genitalia with one of the Colorado forms fig- 

 ured here (fig. 228). I have seen no specimens from either of the 

 type localities (California or Oregon). In the Kearfott collection 

 there are three specimens named by Walsingham. One of these is 

 labeled " cotype " but none bear locality labels. 



Male genitalia figured from two Colorado forms in the National 

 Collection. 



Distribution according to specimen in National Collection, Ameri- 

 can Museum and Collection Barnes: Colorado, Arizona, Utah, 

 Wyoming, British Columbia (Kaslo). 



Alar expanse. — 13-23 mm. 



Type. — In British Museum. 



