( 531 ) 



sejiarated for the g-reater part ; first di.seal line tliiu, ijrolceii at the veius like tlie 

 following lines, bars M' — M^ of lines 3 and 4 lieavier and closer together, often 

 forming a single patch ; oblinue band as in sericeiis in position, narrower in front, 

 more or less dilated distad at li-. Tire diseal and snbmarginal obscnre bands of the 

 hiudwing of sericeus are also marked in omissa. 



Costal margins less marked with greyish white on underside than in sericeus, 

 the tawny colour more restricted and less bright ; brown distal border of hindwing 

 with a distinct white line as in sericeus, the border widest between ]{- and 11^, not 

 upon 1I-. Abdomen, below, less bright tawny, and breast more olivaceous than in 

 the previous insect. 



c?. Tenth sternite (PI. XLIV. f. 24) slightly widened apically. Process of 

 harpe (PI. XLVIII f. 24) less triangular than in the preceding species, the hinder 

 edge not so heavily dentate, the teeth being confined nearly to the very edge of the 

 process. Left process of penis-sheath (PI. LV. f. 21) nearly horizontal, less 

 oblique than in sericeus and the following sjiecies. 



? . Not dissected. 



Early stages not known. 



Ilab. North India. 



In the Tring Museum IS <?<? from : Bnxa, Bliutan (Ji/pe) ; Sikhim. 



448. Acosmeryx castanea spec. uov. 



Ai'is/iiKn/r iiiiiTiLi, L(ech (iioii Cramer, ITHl), J'nic. Zool. Sor. Lmicl. p. 585. n. 1",) (188S) (partim) ; 

 Kiiby, Cut. Lep. Bet. i. p. 1148. n. 1 (1892) (partim): Leech, Truiis. Ent. .$'.«■. LoirJ. p. 281. 

 n. 47 (IH9H) (partim ; Yokohama; Kiukiang, vii.). 



c??. Chestnut-brown above, shaded with grey, the dark mnrkings of thorax 

 and abdomen quite indistinct ; lireast olivaceous cinnamon-rufous, underside of 

 abdomen ferruginou.s. 



Wings not dentate, or the teeth barely vestigial : less elongate tiian in outissa. 

 I'pperside, forewiug : resembling omissa, oblique discal band widened distad 

 between I{- and M', its jiroximal edge more curved than in omissa, first discal line 

 also weak, barely more distinct on the dark ground, bar.s M' — M^ of discal lines 

 3 and 4 not heavier than the others, nor closer together ; grey subapical area sharply 

 limited at U- in a similar way as in iiat/a, not extending beyond this vein ; antemedian 



baud more or less filleil in witli brown. Hindwing less olive-grey than iu ?ia(/a 



and omissa. ; disc somewhat cinnamon-rufous along the rather distinctly marked 

 cliestriut-olive distal marginal band ; a faint discal line from costa to anal angle. 



Uudersidc : outer disc of forewing and disc of iiindwing more reddisJi tawny 

 than in serireits, and far more so than in oinisxa ; grey costal sealing not more 

 cxinspicnous than in omissa ; grey scaling within distal nuu-ginal border of forewing 

 diffuse, less distinct tiian iu the previous species. 



cf. Lobes of tenth sternite almost iiointed. Process of harpe similar to that 

 of sericeus, the ventral edge dentate (PI. XLVIII. f. 27). Penis-sheath more 

 Htrongly and obliipndy roimded than in the otiier species, tlu^ armature helmet-like 

 (PI. LV. f. 22) 



V. Vaginal plates (PI. XL!, f. s) transversely folded; orifice free, snbaiiical. 



Kiirly stages not known. 



I /a//. .lajian ; ( 'hina. 



In the Trirjg Museum 7 cf J, 4 ¥ ? from : Vokohamu, vi. viii ; fi/j/c : 2."). vi. 

 1896. 



