AMERICAN MICEOLEPIDOPTERA. 115 



The species may be sepai-ated as follows : 



Foi-e wings with straight, transverse fascia at two-fifth ; scales black and white 



(PI. VII, fig. 14) occideutella. 



Fascia, when present, angulate or interrupted. 

 A dash on the fold and stigmata distinct. 



Ground color of fore wings pale, grayish white to grayish fuscous. 



Fascia augulate, entire tenebrella. 



Fascia interrupted or obsolete. 



Fascia oblique, irregular (PI. VII, fig. 15) minuivella. 



Fascia transverse, interrupted (PI. VII, fig. 12) grisella. 



Ground color of fore wings yellow or ochreous. 

 Markings distinct. 



Without distinct spot in middle of foi-e wing. 



Pale grayish yellow, markings very pronounced, dark brownish fus- 

 cous (PI. VII, fig. 13) fiiscosuflusella. 



Markings less distinct, reddish fuscous. 

 Ochreous, larger, a dorsal patch at two-fifth. . . .ochroconielia. 

 Pale canary-yellow ; a dash in middle of fold (PI. VII, fig. 17). 



caiiariella. 

 A spot in middle of fore wing (PI. VII, fig. 16). • .(liscopiiiietella. 

 Fore wings without markings, stigmata obsolete. 



Fore wings ochreous, hind wings pale, greyish ochreous; larger. 



ochreella. 

 Both wings pale canary -yellow ; size small Feiiyesella. 



D. occideutella sp. u. (PI. VII, fig. 14). Female.— Thorax, abdomen, 

 head and antennal eye-caps dull greyish fuscous. Labial palpi blackish fuscous 

 and very short, terminal joint miuute; fore wings narrowed towards the apex 

 equally from both margins; general color steel grey, the s(!ales being black and 

 white in approximately equal proportion ; costal half of base tinged with yellowish 

 fuscous; basal two-fifths of wing a little paler than the rest and limited by a narrow, 

 whitish band, straight and at a right angle to the margins, externally this white 

 band is edged by a line of raised, blackish scales; costa from fascia to apex, dark 

 fuscous or blackish ; two blackish dots at end of cell ; cilia greyish fuscous. Hind 

 wings greyish fuscous, sprinkled with pale scales towards the :.pex, cilia greyish 

 stramineous. Under side of body creamy white, speckled with pale fuscous. 

 Legs fuscous, middle and hind pair creamy white within. Under side of fore 

 wings dark fuscous, indistinctly sprinkled with paler scales, hind wings a shade 

 paler. 



Expanse 10. mm., .40 inch. 



Hab. — Kaweah, Cal. 



A single female specimen ; a distinct species. The raised scales 

 on the fore wings of this species I have not observed in any other 

 of the group. This character, together with the unusually .short 

 palpi and the entire fascia of fore wing, make this an aberrant 

 species of the genus. 



TRANS. AM. ENT. 80C., XXVII. OCTOBER, 1900 



