398 COLOBOCHYLA. By W. Warrek 



antennae of $ pubescent; scaling smooth; forewing with acute apex, the termen excised between apex and 

 middle ; hindwing with termen rounded. Larva flattened ; the first two pairs of abdominal prolegs shorter 

 and thinner; a subspiracular ridge bearing fleshy filaments; feeding on tree-lichens in autumn, hybernating 

 half grown, and feeding up in spring. Type L. flexula Schijf. 



flexula. L. flexula Schijf. (= flexularia Hbn.) (71 b). Forewing greyish fawn colour, sprinkled with dark atoms; 



the inner and outer lines brown, double, filled in with pale ochreous, both angled below costa; subterminal 

 line pale, but faint; reniform stigma represented by two transversely placed dots; terminal area suffused with 

 pale ferruginous, deepening towards apex which itself remains whitish; a black spot in fringe at apex; 

 hindwing ochreous whitish, dusted with black ; outer line fuscous, straight. Larva whitish grey, sometimes green- 

 ish- or ochreous-tinged ; dorsal line darker, especially at the segmental incisions ; subdorsal lines pale, edged 

 above with dark, and below with dark green; segments 9 and 10 somewhat darker; tubercles black; feeding 

 on lichens growing on tree trunks. Throughout Central Europe, also in S. Scandinavia and St. Petersburg, 

 and in Italy in the South; in Armenia and the Ussuri district. 



rectUinealis. L. rectilinealis Graes. (71 b). Forewing pale greenish yellow, with two straight reddish brown lines, 



conversely edged with paler, and somewhat approximated on inner margin; the median area between them 

 slightly darker, also the extreme termen; costal edge narrowly yellow; hindwing yellowish grey, with a 

 faintly darker transverse line. Amurland. 



Klacina. L. lilacina spec. nov. (74a). Differs from rectilinealis Graes. from Amurland in the ground colour being pale 



lilac grey; the inner line is bent on the subcostal vein, and the outer hardly bent in cell; in the cell are 

 two black dots, representing the two stigmata; subterminal line indicated by blackish spots in the terminal 

 intervals; fringe deep brown, the tips pale in the excision only; hindwing pale brownish fuscous, with 

 traces of a darker outer line above anal angle. Described from a single $ from Japan. 



70. Genus: Colobocliyla Hbn. 



Tongue present; frons smooth, bearing a tuft of scales; palpi obliquely porrect, the second segment 

 thickened with appressed scales, the third short and blunt; thorax and abdomen smoothly scaled; antennae 

 in (J ciliated; forewing with termen curved, not excised; markings simple, consisting of oblique lines. Larva 

 with rudimentary prolegs on segment 8, and none on segment 7 ; full fed in summer, probably hybernating 

 small; pupa in a slight cocoon. Type G. salicalis Schiff. 



salicalis. C. salicalis Schiff. (71 b). Forewing pale fuscous finely dusted with whitish, so as to appear grey; lines 



ferruginous edged with pale ochreous; the inner straight, the outer and subterminal somewhat curved inwards, 

 the latter running into apex; hindwing pale fuscous, darker terminally, showing a faint subterminal line. 

 A local but widely spread species, rare in Britain, found throughout Central Europe, in Asia Minor, Persia, 

 and through Central Asia to Amurland and Japan ; the forms occurring in these last localities are greyer or paler ; 

 cinerea. that in Japan, — ab. cinerea Btlr., — greyer than the type; while the Amurland form — ab. laetalis Stgr. — 

 is not only much paler but slightly smaller. Larva green, with the segmental incisions yellowish; the head 

 also green; spiracles black; feeding on leaves of Salix, especially S. capraea, also on Populus tremula and pyra- 

 midalis. 



laetalis. 



inquinata. C? inquiiiata Led. (= pyrami Rghfr.) (74 a). Forewing in <$ dusty brownish grey, in the $ whiter 



with slight irroration; reniform stigma suffused with blue grey; inner and outer lines, rising from blackish 

 costal streaks, are obsolete below middle; the inner somewhat curved, the outer waved and outcurved beyond 

 the reniform; subterminal line diffusely pale, preceded by a darker shade, irregularly waved; hindwing 

 brownish grey, with traces of dark lines on inner margin only. Beyrut, Syria, Cilicia. 



platyzona. C. ? platyzona Led. Forewing dark ashy grey, darker along termen ; the median area olive brown, edged 



by dentate white inner and outer lines, the latter with one larger tooth in middle ; hindwing ashy grey. Trans- 

 caucasia. 



flavoma- C. flavomacula Oberth. (71b). Forewing with pointed ^apex; the termen slightly bent below middle; 



cula. 



