AMERICAN LEFIDOPTERA. 61 



Dorsal spot commences within the margin. 



Oblique line in apical part of wing defectella. 



Without such a line. 



Apex of forewings black apicisignal ella. 



Apex of forewings not black angulifasciella. 



Without such dorsal spot. 



With two oblique costal streaks. 



Spots iu outer half of wing large, confluent mariiiorella. 



Spots not confluent. 



Dorsal margin with two well-marked spots fuscomaculel la. 



Dorsal margin with numerous dots granella. 



With one costal streak. 



Forewings yellowish brown ; head yellow cloacella. 



Head not yellow. 



A curved line in outer half of wing inters! itiella. 



Without such a line Iu I \ i«.n II n«.«l la. 



Costal spots not extending into disc. 



Two longitudinal dashes in apical part of wing inacii la l»«'l la. 



Without such dashes. 



Marginal spots very conspicuous niargi ui macu 1<>I la. 



Marginal spots inconspicuous. 

 Speckled with dark brown spots or scales, scales aggregated into several 



discal spots fuscopulvella. 



Forming two, more or less complete, eutire fascias- . n igroatoiuel la. 



T. molybdaiiella n. sp. — PI. Ill, fig. 7. — Maxillary palpi aud labials 

 within sordid ochreous, the latter externally, except at the apex, dark brown, 

 terminal joint small, scarcely one-half the length of the second. Head grayish 

 ochreous, intermixed with fuscous, before the insertion of the antennae ; the lat- 

 ter slender (J ), fuscous. Thorax grayish ochreous, speckled with fuscous and 

 an irregular, ill-defined stripe each side of dark brown scales. Forewings mod- 

 erately wide, a leaden, grayish white, lustrous, markings blackish brown ; costa 

 irregularly dark fuscous almost to the median fascia, the latter begins about mid- 

 dle of costa, rather wide and extends somewhat obliquely backwards until it 

 adjoins a large quadrate spot at one-third of the dorsal margin, forming thus a 

 wide, entire fascia, scarcely at all angulated externally, a curved line, of more or 

 less connected spots beginning at the median fascia and about one-third from the 

 costa and reaching a large double spot on the costa before the apex, ou the costa 

 between the last mentioned spot and the median band are two large triangular 

 spots, and alternating with them three small round dots ; the marginal spots in 

 the apical part of the wing are large and coalesce with the dark brown color of 

 the disc; the entire dorsal margin is irregularly spotted ; a dash in basal part of 

 fold. Cilia sordid ashen-gray, irregularly dotted and barred with dark fuscous. 

 Hindwings under 1, deep leaden gray, dusted with fuscous. Abdomen above 

 dark fuscous; underside of body and legs ochreous, anterior and middle legs ex- 

 ternally and tarsal joints above, except at apex, fuscous. 



Exp. 14.0-17.0 mm. ; 0.56-0.68 inch. 



Hub. — California (Pasadena). 



TRANS. AM. ENT. SOC. XXXI. FEBRUARY. 1905. 



