90 BULLETIN 123, UNITED STATES NATIONAL MUSEUM. 



Alar expanse. — 14r-22 mm. 

 Types. — In British Museum. 



Type localities. — Texas (argentialbana) ; Loveland, Colorado 

 {smithiana) . 

 Food plant. — Unknown. 



24. EUCOSMA MORRISONI (Walsingham), 

 (Fig. 229.) 



Paedisca morrisoni Walsingham, Trans. Ent. Soc. Lond., 1884, p. 138. 



Eucosma morrisoni Fernald, in Dyar List N. Amer. Lepid., no. 5159, 1908.— 

 Dyar, Proc. Ent. Soc. Wasli., vol. 5, 1903, p. 179. — Keaefott, Can. Ent., 

 vol. 37, 1905, pp. 44, 208. — Barnes and McDunnough, Check List Lepid. 

 Bor. Amer., no. 6886, 1917. 



Male genitalia figured from specimen in National Collection taken 

 at Vineyard, Utah (" VIII, 9-13, Tom Spalding "). 



Distribution according to specimens in National Collection Ameri- 

 can Museum and collection Barnes : Utah, Colorado, Montana, Mani- 

 toba, New Mexico, California. 



Alar expanse. — 16-23 mm. 



Type. — In British Museum. 



Type locality. — Montana. 



Food plant. — Unknown. 



25. EUCOSMA PEKGANDEANA Fernald. 

 (Fig. 240.) 



Eucosma pergandeana Fernald, Can. Ent., vol. 37, 1905, p. 399. — Kearfott, 

 Proc. U. S. Nat. Mus., vol. 28, 1905, p. 352.— Barnes and McDunnough, 

 Check List Lepid. Bor. Amer., no. 6917, 1917. 



Paedisca i)ergandeana Walsingham, Trans. Ent. Soc. Lond., 1895, p. 506. 



This species with its western variety flavana Fernald comes be- 

 tween morrisoni Walsingham and agricolana Walsingham and 

 grades into both species in pattern. It is variable also in structure 

 having veins 3-4 of hind wing frequently long stalked and oc- 

 casionally even united. The genitalia also are somewhat variable. I 

 would limit the name pergandiana to the eastern form. 



Male genitalia figured from a typical specimen in National Collec- 

 tion taken at East Eiver, Connecticut (" July — C. R. Ely"), 



Distribution according to specimens in National Collection, Ameri- 

 can Museum and collection Barnes: North Carolina, Pennsylvania, 

 District of Columbia, Connecticut, New Hampshire, New Jersey, 

 New York, Ohio, Massachusetts. 



Alar expamse. — 13.5-18 mm. 



Type. — In collection Fernald. 



Type locality. — Virginia. (Male type labeled " Pergande, Wash- 

 ington"). 



Food plant. — ^Unknown. 



