262 New Geometridae and Dioptidae in Joicey Collection 



parallel with postmedian, distal wanting ; subterminal line fine, not 

 sharp grey, interrupted at the veins ; fringe light ochreous. Hind wing 

 with SC 2 minutely stalked with R' ; colour and markings as on fore 

 wing, but without so much ochreous suffusion proximally and with 

 antemedian line wanting ; median shade just beyond celldot. Under- 

 side similarly but less sharply marked. 



Bashkars River, just north of Lake Taletskoi, Altai, July 26, 1898 

 (H. J. Elwes). Type ex coll. Elwes. 



Very distinct from any hitherto known species of the Py large section. 

 There is a bare possibility that anaitaria Herz, described from the ? and 

 unknown to me, may prove the same, but this is extremely unlikely 

 both from the description and from the locality (Lena-Vilyui District). 



16. Ptychopoda {Xenocentris) trisetata sp. nov. 

 <? , 16 mm. 



Face blackish-fuscous. Palpus slender, fuscous. Vertex white. 

 Antennal joints triangular, the ciliation rather long (damaged in the 

 type). Collar tinged with ochreous. Thorax, abdomen and legs light 

 bone-colour, the fore leg somewhat darkened on upper and inner sides. 

 Mid-tibia with moderately strong fringe of long hair on upper side. 

 Hind tibia dilated, the femoro-tibial pencil light brown, fringe of upper 

 side and the distal tuft whitish, the latter reaching to near the end of 

 the tarsus, which when freed from its covering is seen to be not greatly 

 shorter than the tibia. 



Wings slightly narrower than in biselata Hufn. (= biselata auct), 

 in colour and markings almost identical with that species, the dark 

 markings rather weak, the celldots minute and sharp. Fore wing with 

 some slight shading proximally but with no clearly differentiated ante- 

 median line ; median shade obsolescent anteriorly, fairly broad behind 

 the celldot ; postmedian line fine, slightly straighter and slightly more 

 proximal than in biselata; distal shades rather uniform, with the 

 pale undulate subterminal broad ; no terminal line ; fringe narrowly 

 yellowish-tinged proximally, then more greyish. Hind wing with termen 

 appreciably bent — though not angled — at R 3 ; markings corresponding 

 to those of fore wing. Fore wing beneath rather more suffused, hind 

 wing rather whiter, with the subterminal dark shades somewhat 

 narrowed. 



Shinano, Japan, the type label " 2. 11. '15," probably a clerical 

 error for 2. ix. 15, the date assigned to the paratype. Also a short 



