AiiT. 8 NORTH AMERICAN EUCOSMINAE HEINKICH 3 



pattern and genitalia lepidana resembles Tcokana Kearfott, which may 

 be nothing but an eastern variety. The harpe of lepidana is some- 

 what smaller, however, and the cucullus more pointed at (costal) apex. 

 Male genitalia figured from specimen in the National collection. 



THIODIA PARVANA (Walsingham) 

 Figure 6 



The National collection has received from Dr. Annette Braun a 

 male which, except for locality, answers in detail to Walsingham's 

 description. In external characters it is similar to fertoriana Heinrich, 

 but in genitalia quite distinct. It was collected at Yellowstone 

 National Park Lake, Wyo. ("VII-5-24"). 



Male genitalia figured. 



TmODIA PASTIGIATA. new species 



Figure 3 



A grayish white species with faint maculations and a fine black 

 subterminal line in cilia of fore wing; similar to griseocapitana but 

 lacking any trace of ocherous shading, with different marking of the 

 cilia and different genitalia. 



Palpus, face, head, and thorax white with a few black-brown spots 

 on outer side of palpus, on sides of face near eyes, and on side of head 

 just over base of antenna, and with a faint dusting of similarly 

 colored scales on anterior margin of thorax; palpus scarcely extending 

 the length of the head beyond it. Fore wing finely clouded and 

 scatteringly lined with blackish brown scales giving it, to the naked 

 eye, a rather sordid grayish white color; under magnification the dark 

 markings show as a series of fine well-spaced lines on costa, a some- 

 what heavier series of crosslines on dorsum toward base indicating 

 faintly a half basal patch, a slight clouding on dorsum near tornus, a 

 similar clouding at apex of cell and toward termen, and two vertical 

 dark lines (well separated) in ocelloid area; white ground color most 

 appreciable on outer half of costa and as a white subapical costa spot; 

 cilia white, with blackish brown basal dustings and a similarly colored 

 subterminal line; veins 3, 4, and 5 not approximate at termen; 

 termen slanting and straight. Hind wing smoky white; cilia white 

 with a faintly darker basal band and (toward apex) a similar sub- 

 terminal band; veins 3 and 4 stalked. 



Male genitalia of type figured. 



Alar expanse. — -16-20 mm. 



Type. — In collection Barnes. 



Paratypes. — Cat. No. 41200, U.S.N. M., also in American Museum 

 and collection Barnes. 



Type locality. — Monachee Meadows, Tulare County, Calif. 



Food plarit. — Unknown. 



