112 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 90 



with subapical aniiulus and apex blackish fuscous. Antenna blackish 

 fuscous. Head, thorax, and fore wing pale ochreous; face ochreous- 

 white; base of costa and spot in anal angle blackish fuscous; forewing 

 sparsely irrorated with fuscous and shaded with reddish scales; at 

 basal third two fuscous discal spots obliquely one above the other; 

 at end of cell a fuscous spot preceded above by a less conspicuous one 

 of the same color; between the outer and inner pairs of spots a poorly 

 defined fuscous cloud in costal half of wing; apical half of costa and 

 termen and the cilia with a reddish suffusion, cilia light ochreous. 

 Hind wing grayish ochreous, cilia paler, with alternating light fus- 

 cous and whitish bands. Legs ochreous-white strongly suffused and 

 overlaid with blackish fuscous except at joints; posterior tibia and 

 tarsus hardly more than irrorated with fuscous. Abdomen grayish 

 fuscous above, pale ochreous beneath ; on each side ventrally, a black 

 longitudinal line. 



Male genitalia. — Harpe narrow, long, pointed, clothed with very 

 fine hairs; clasper stout, slightly curved toward cucuUus, and termi- 

 nating in a knob, Anellus a roughly oval plate, longer than broad, 

 truncated posteriorly, and with well developed, hairy, lateral lobes. 

 Vinculum rounded. Aedeagus stout with a long slender upturned 

 point and a large, spinulate patch in basal half. Transtilla a nar- 

 row, lightly sclerotized band with well-developed, hairy, lateral lobes. 

 Gnathos a spiny cone. Socii broad flaps clothed with fine hairs. 



Female genitalia. — Ovipositor naked except for a few strong long 

 hairs at base and a few weak hairs distally. Genital plate moderately 

 broad, slightly produced anteriorly. Ostium is posterior half of 

 plate. Ductus bursae membranous, slender, widening abruptly to 

 form the large oval bursa copulatrix. Signum a diamond-shaped 

 plate, with the anterior point shorter than the posterior. 



Alar expanse, 19-23 mm. 



Types. — In the British Museum {sahulella) ; in the United States 

 National Museum {callosella). 



Type localities. — Mendocino County, Calif, {sabulella) ; San Ber- 

 nardino, Calif, {callosella). 



Food plants. — Eriophyllum stachaedi folium Lag. and Eriophyllum 

 lantanum typicum Constance, 



Distribution. — ^Western United States probably as far north as 

 southern British Columbia in the interior. 



United States records 



California: Land's End, San Francisco, $ (VII-23^09, F. X. Williams) ; San 

 Francisco, $ (VI-12-26, H. H. Keifer) ; Monachee Meadows, Tulare 

 County, 8,000 feet, $ ("July 8-14") ; Croville, S (IV-14-28, H. H. Keifer) ; 

 San Bernardino, 9 ("June 1-7") ; San Diego, $, 5 ("May 24-30"). 



Idaho: Kamiah, $ (VI-27-35, L. Constance). 



