REVISION OF THE OECOPHORIDAE — CLARKE 243 



cchreous. Hind wing dark fuscous; cilia shining yellowish fuscous. 

 Legs black annulated with white at joints. Abdomen fuscous. 



Male genitalia. — Harpe broad, short, cucullus rounded; sacculus 

 rather strongly, though narrowly, sclerotized and produced as a 

 pointed process slightly beyond cucullus. Anellus consisting of two 

 long, flattened, truncated, lateral processes arising from a small basal 

 plate. Aedeagus relatively long, stout, nearly straight, bluntly 

 pointed ; vesica armed with one long cornutus with lateral serrations 

 and a smaller, stout, hooked distal one. Vinculum bhmtly pointed. 

 Gnathos truncate. Uncus long, pointed. 



Female genitalia. — Genital plate lightly sclerotized posteriorly; 

 ostium long, narrow, opening in anterior membranous part of genital 

 plate. Ductus bursae strongly sclerotized in posterior two-thirds, 

 posterior third somewhat narrower than anterior part ; at middle, from 

 inner surface several long slender spines ; inception of ductus seminalis 

 at posterior two-thirds. Bursa copulatrix small; signum a poorly 

 developed, elongate plate. 



Alar expanse, 10-15 mm. 



Type. — In the Museum of Comparative Zoology, Cambridge, Mass. 



Type locality. — Not stated. 



Food plant. — Unknown. 



Distrihution. — Far-western United States and Canada and North- 

 eastern United States. 



United States records 



Arizona: Huachuca Mountains, $ (no date) ; Pinal Mountains, $ (July 1900, 



Kunze). 

 California: Burney Falls, Shasta County, $ (20-VII-1871, Walsingham) ; Camp 



Baldy, San Bernardino Mountains, ? (June 24-30). 

 District of Columbia: $ (A. Busck). 

 Massachusetts: Cohasset, S (July 6, 1907, Owen Bryant). 



Canadian records 



British Columbia: Kaslo, 2 S $ (29-VI-1903; 25-VII-1903, H. G. Dyar) ; Seton 

 Lake, Lillooet, $ (9-VI-1926, J. McDunnough). 



Remarks. — In Chambers' description he gives the dark areas of the 

 fore wing, head, palpi, etc., as "reddish-brown." In the fresh speci- 

 mens before me these parts are distinctly black, but worn specimens 

 are brownish. In view of this I feel that his description was written 

 from a faded specimen. 



This is the species that has been listed as a synonym of the Euro- 

 pean horkhausenii with which it is definitely congeneric; but a com- 

 parison of the figures will adequately show the differences. 



