BY E. MEYRICK, B.A. 1059 



la. Ground colour of fore wings white 



2a. Veins lined with ochreous 398. neurota. 



2b. Veins not lined. 



3a. Without markings except a dorsal suffusion. 



4a. Thorax grey 387. monostropha. 



41). Thorax white - x 388. homoleuca. 



3b. With defined darker markings. 

 4a. With a streak along inner margin. 

 5a. With a streak along hind margin. 



6a. With an entire median fascia 392. paidinella. 



6l>. Without median fascia 391. crystallina. 



5b. Without hind-marginal streak 389. chionea. 



41). Without dorsal streak. 



5a. Without transverse fascia 390. glacialis. 



5b. With one or more fascia?. 



6a. Fascia linear _ 393. suppressella 



6b. Fascia moderately broad. 



7m. With two entire fasciae 395. niphodesma. 



7b. With only one entire fascia. 



8a. Thorax dark fuscous 396. trilicella. 



8b. Thorax white. 



9a. Hind wings light grey 394. dichthra. 



9b. Hindwings ochreous-whitish 397. thalamepola. 



lb. Ground colour of fore wings not white. 

 2a. Costa white or paler than ground colour. 

 3a. With dark discal dots. 



4a. Hindwings pale yellow-ochreous 372. callista. 



4b. Hindwings greyish. 



5a. Head whitish 374. enoplia. 



5b. Head brownish-ochreous 378. milichia. 



31). Without discal dots 387. lithophanes. 



2b. Costa not paler. 



3a. Hindwings hyaline or semihyaline towards base. 



4a. Forewings yellow. 



5a. With a broad posterior purplish fascia. 



6a. Fascia terminal 365. thiasotis. 



09 



