ABENOSTOLA. By W. Warren. 235 



R. Iutosa Hbn. (= pilicornis Haw., veotis Curt., bathyerga Frr.) (49 b). Forewing dull white, lutosa. 

 finely dusted with blackish in the intervals, sometimes slightly rufous-tinged; outer line represented by a 

 row of blackish dots, often obsolete: hindwing whitish washed with grey; sometimes with an outer series 

 of dark spots; — the ab. crassicornis Haw. (49 b) has the black dusting intensified on both wings, for- crassicornis. 

 ming, in some instances, dark horizontal streaks in the forewing; the rows of spots in both wings strongly 

 expressed; — ah. rufescens Tutt (= cannae Stph. nee Ochs.,) (49 c) is the red form corresponding to lutosa rufescens. ■ 

 Hbn.. sometimes with, at others without, the rows of spots; for the more dusted red form, corresponding to 

 ab. crassicornis Haw., Tutt has used the name rufescens-suffusa (49 c). In North and Central Europe, including ™^ sce,!S " 

 Britain; E.Siberia; Japan. Larva bone-colour with a pinkish tinge; head light brown: feeding underground 

 in the roots of the reed. The form occurring in Japan must be separated as a subspecies griseata subsp. griseata. 

 nov. (49 e) : in the (JcJ of this (I have not seen a $) the hindwings are dark grey beyond middle with the fringe 

 pale: the forewings also are greyer ochreous with the pale veins more distinctly defined by dark scaling. 

 2 jj in Tring Museum from Ichikishiri, Yezo, August 1890, (Dr. Fritze). 



R. pallidipennis spec. nov. (49 c). Forewing whitish with a faint ochreous tint; the dark dusting Zf^nis. 

 minute and sparse; dots forming the outer line quite small, and only present occasionally in the ($$; 

 hindwing and fringe pure white: underside whitish; some dark scales on each side of the middle of dis- 

 cocellular of forewing, forming a sort of ocellus; dark terminal dots between veins in forewing; head, 

 thorax, abdomen above and below and legs all whitish, without grey dusting. Besides its general paler 

 coloration the species differs from lutosa by its still narrower forewings and more oblique termen, which 

 merges into the inner margin without any prominent elbow, such as is generally to be observed in 

 lutosa. 4 $$ and 2 <$<$ in Tring Museum from Issyk-kul, July 1902 (Kutsenko) and 1 <$ from Kaschka- 

 ssu, Tian-shan. of the same date. 



110. Genus: Arenostola Hmps. 



Tongue well-developed; frons smooth, with rough hairs; palpi porrect, the terminal segment de- 

 pressed; antennae of £ shortly ciliated: thorax and abdomen without crests; wings usually short and 

 broad, with few markings. Larva in the lower part of stems of grass and carex. Type Arenostola phrag- 

 m it id is Hbn. 



A. elymi Tr. (49 d). Forewing bone colour, tinged with pale brownish between the veins; the veins elymi. 

 a little darker; outer line indicated by a double row of dark spots; hindwing luteous white; ab. saturatior saturatior. 

 Stgr. is deeper brown. A coast species found in the east of England, in Denmark and N. Germany. 

 Larva bone colour, sometimes with a yellow or reddish tinge; head reddish brown; on Elymus arenarius. 



A. procera Stgr. (49 d). Forewing pale rufous ochreous, thickly irrorated with brown; the veins procera. 

 dotted with brown; an outer row of dark vein points; hindwing whitish. W. and E. Turkestan, Mongolia, 

 and Kashmir. 



A. brevilinea Fenn (49 d). Forewing dull grey brown densely black-dusted; the veins terminally brevilinea. 

 paler; inner and outer lines represented by a series of dark vein dots; a black streak from base below 

 cell: hindwing fuscous, darker towards termen; an outer row of dark dots; the ab. sinelinea Farn (49 d) sinelinea. 

 is more uniform in coloration, without the black streak from base. Hitherto recorded only from the fens 

 of Norfolk, England. Larva pale ochreous, with brown freckling; dorsal, subdorsal, and spiracular lines 

 orange edged with yellow; head pale brown; feeding on Phragmites; living within the stems and when 

 young feeding there; afterwards emerging from the stems by night and feeding on the leaves. 



A. phragmitidis Hbn. (= semicana Esp., verecunda Ev., moravitzii Men.) (49 d). Forewing very ^"J^ s . 

 smooth, pale ochreous, becoming pale brownish red towards termen; the fringe dark at tips; hindwing pale 

 greyish ochreous; — the ab. rufescens Tutt (49 d) is flushed throughout with deep flesh colour; ab. pallida prt jj ? ;^ a . 

 Tutt (49 e), the usual British form, is smooth pale ochreous throughout; ab. olivescens ab. nov. (49 e), is olivescens. 

 smooth olive grey, the hindwing dark grej-. Found in North and Central Europe, in Western Asia, and 

 Turkestan. Larva bone-colour; subdorsal line somewhat interrupted, broad, purplish-fuscous; lateral lines 

 similar, but narrower; head black; thoracic plate brown; living like brevilinea in the stems of reed. 



A. impudica Stgr. (49 e). Extremely near brevilinea Fenn, but paler grey, more uniform in color- impudica. 

 ation: a dark cloud at lower end of cell; the inner and outer lines shown by vein-spots; in ab. basistriga basistriga. 

 ab. nov. there is a short black streak from base below cell, as in brevilinea typical. Amurland and E. Turkestan. 



A. mollicella Fung. (49 e). Forewing dull grey brown, sprinkled with lighter grey along costa and mollicella. 

 veins: outlines of stigmata denoted by some white scales; terminal line broken up into small dark yellow- 

 tipped spots; fringe grey brown; hindwing white. Described by Piingeler from a single $ from Kuku 

 Nor. Tibet. Nearest procera Stgr., but smaller and more delicate in build. 



A. sohn-retheli Fung. (49 e). Forewing dull whitish, dusted with greyish-brown; veins, especially sohn-relheli. 

 towards termen, lighter; hindwing pale grey. Much resembles morrisii, but distinguished by the smoother 

 scaling, the greyish brown dusting divided into streaks by the pale veins. Italy. 



