162 PROCEEDINGS OF THE NATIONAL MUSEUM tol. 90 



a strong brownish or fuscous suffusion which appears to be char- 

 acteristic of the northern specimens. The genitalia of the two forms 

 are identical. 



SEMIOSCOPIS MCDUNNOUGHI. new species 



Plate 22, Figuke 136 



Semioscopis aurorella Blackmore (not Dyar), Kept. Prov. Mus. Nat. Hist. 

 British Columbia for 1921, p. 32, pi. 4, 1922. 



Similar to aurorella but slightly broader winged, less distinctly 

 marked and with a longer, straight cornutus. 



Labial palpus white with a carmine tinge; second segment 

 strongly overlaid with blackish fuscous exteriorly for its whole 

 length; third segment with poorly defined blackish-fuscous subbasal 

 spot and subapical annulus. Head whitish with some brown scales. 

 Thorax cinereous strongly infused with fuscous and with median 

 longitudinal streak and tufts blackish fuscous; tegula blackish fus- 

 cous, white-edged. Fore wing shining gray suflPused with brown and 

 with a roseate tinge; discal bar, reduced to a poorly defined cres- 

 centic dash or a spot, a dash in cell, a basal dash following vein Ic, 

 and a basal shade, blackish fuscous; along costa and around termen 

 a well-defined series of blackish-fuscous spots; cilia light fuscous 

 with a median grayish band and a whitish pink-tinged terminal 

 line. Hind wing grayish fuscous, darker toward margins and with 

 a narrow fuscous terminal line; cilia pale yellowish fuscous with 

 basal and subterminal fuscous bands. Legs yellowish white strongly 

 overlaid with blackish fuscous except at joints and on hind tibiae 

 where the lighter ground color is carmine tinted. Abdomen 

 ochreous-fuscous lightly suffused with fuscous beneath. 



Male genitalia. — Harpe narrow, long; cucullus rounded; clasper 

 long, reaching almost or quite to costa, slightly curved, pointed; 

 sacculus narrow, strongly sclerotized. Anellus a broad, oval plate, 

 narrowed, produced, and curved posteriorly to form a semicylindrical 

 articulation for the aedeagus; lateral lobes absent or at most only 

 indicated by a few hairs. Aedeagus stout, moderately long; apex 

 flattened, rounded; vesica armed with a single long, stout, straight, 

 sharply pointed cornutus. Vinculum broadly rounded. Transtilla 

 membranous ; lateral lobes vestigial, mainly indicated by a few hairs. 

 Tegumen bluntly pointed. Socii small hairy lobes. 



Alar expanse, 28-29 mm. 



Type.—U. S. N. M. No. 53117. 



Type locality. — Bellingham, Wash. 



Food plant. — ^Unknown. 



Remarks. — Described from the ^ type (Bellingham, Wash., 

 14-in-1923, J. F. G. Clarke, ¥0. 573) and 1 5 paratype (Fraser 



