TEACHEA. 167 



suffused with Lrown, the dorsal crests blackish at tips. Fore wini,^ 

 pale brown with slight dark irroration, the basal aud postmedial 

 areas, the inner medial area, aud apex sutt'iised with bluish white ; 

 a sinuous black streak below base of cell ; subbasal line represented 

 by slight black strite from costa and cell ; an oblique black streak 

 above inner margin before the autemedial line, which is dentate, 

 oblique from costa to submedian fold, then inwardly oblique ; 

 clavit'orm short, oblique, with black streak from its lower edge to 

 postmedial line ; orbicular and reniforra with pale brown centres 

 and whitish annuli defined by black, the former narrow, oblique 

 elliptical, the latter somewhat produced at lower extremity ; traces 

 of an oblique medial shade from costa to lower angle of cell ; 

 postmedial line defined by white on outer side, bent outwards 

 Lelow costa, then dentate, angled outw^ards at vein 5, then oblique 

 and incurved in intermediate interspace, some white spots beyond 

 it on costa ; subterminal line represented by slight white marks 

 defined on inner side by small dentate black marks between veins 6 

 and submedian fold, and with white teeth extending to termen at 

 veins 4, 3 ; a terminal series of small black lunules ; cilia brown 

 intersected with white. Hind wing grey sutiused with brown, 

 especially on terminal area ; cilia yellowish at base, white at tips, 

 and with slight brown medial line on apical half ; the underside 

 whitish irrorated with brown, a slight discoidal spot and sinuous 

 postmedial line. 



Ab, 1. Fore wing with the ante- and postmedial lines interrupted 

 and conjoined by white suff'usion along vein 1 ; the subterminal 

 line entire and with hardly a trace of dark dentate marks on either 

 side. — Alberta. 



Bah. Canada, Alberta, Calgary ( Wolley-Dod), 1 2 , lled-deer E. 

 {Wolley-Dod), 5 S ; U.S.A., Washington, 1 $ type, Colorado, 

 California. Ea'i). 40 millim. 



2924. Trachea centralis. (Plate CXII. fig. 5.) 



Xylophasia centralis, Smith, Proc. U.S. Nat. Mus. xiii. p. 441 (1890) ; id. 

 Oat. Koct. N. Am. p. 14U. 



J . Head and thorax reddish brown mixed with white scales ; 

 frons with black bar ; tegulae with black medial line and whitish 

 tips ; patagia with some black scales near edges ; tarsi blackish 

 ringed with white ; abdomen brown mixed with whitish, the dorsal 

 crests dark at tips. Fore wing reddish brown sufi^used with bluish 

 white, the basal and postmedial areas and apex almost entirely 

 white, medial and terminal areas browner, the veins with slight 

 dark streaks ; subbasal line waved, from costa to submedian fold ; 

 a sinuous black streak below base of cell and an oblique streak 

 above inner margin before the antemedial line, which is dentate, 

 oblique from costa to submedian fold, strongly angled outwards in 

 submedian fold and above inner margin and inwards on vein 1 ; 

 claviform slightly defined by black, acute at extremity and with 



