( 280 ) 



marginal areas of the liiiulwiiig being- of tlie same darlc colour as the disc, not 

 yellow. 



cj. Tenth tergite liroader in the middle than in maac/d, the a{)ical sinus not so 

 deep, the lobes notched laterally, with a tooth jiroximally of the notch, nearly as in 

 spercMus ; sternite nearly as broad as in maacki, suddenly narrowed to a short hook, 

 the sides sometimes sharply angled. Clasper as in maacki, dorso-apical lobe rather 

 more pointed ; harpe shorter ; processes above penis-sheath as in maacki, slightly 

 more slender. 



?. Anterior part of vaginal plate triangular, incrassate l)efore the vaginal 

 orifice, with a small smooth mesial tubercle proximally of this incrassate ridge. 



Larva green, seldom cinnamon-brown, with red side-bands, which are inter- 

 rnpted at the joints and form the upper border of a row of [lale tnbercles : head 

 almost smooth in front. —Food-plant : Tilia cordata. 



Chrysalis not described. 



Ilab. East Siberia and Manchuria, July : Askcdd, Wladiwostoci;, Ussuri, 

 Suifnn, etc. 



In the Tring Museum : 5 Jc?, 3 S ? ; one larva. 



238. Marumba sperchius. 



Siiifriiilhiis x/ierchiiis Mi-nC'trivs, Enmii. C'urji. Aiihii. Miis. Pilr., Lep. ii. p. 1:17. n. LOfiS. t 13. f. h 

 (1857) (Jap.in ;— Mils. St. Petropolis) ; Luc, Hull. Snr. Eiil. f"i: p. 149 (18.'i8 ( = d>rus! 

 ex err.). 



(? ?. In contradistinction to M. di/iris and most other species the e.xternal line 

 of the postdiscal pair is absent or vestigial, while the inner one is as distinct as 

 the exterior diseal line. The apical area outside the postdiscal line of the under- 

 side of the forewing is not tawny as in ili/rns. Antenna of S very heavy, two-fifths 

 the length of the forewing, obviously longer and thicker than in (h/ras ; that of 

 ? slightly comi)rcssed, very feebly grooved, seriated basal ciliac barely half tlie 

 length of the segment. Fringe of forewing not wliite between the veins. Month- 

 parts see PI. LXI. f. 11. 



6. Tenth tergite (PI. XXVI. f 8) rounded at the sides, obviously broader 

 before the end than in the middle, the sinus narrow, the lobes notched, inner 

 angle acute ; sternite straight, not or very feebly bent upwards, narrow and long, 

 compressed, np])erside rough with minute teeth. Dorso-apical lobe of clasper 

 (PI. XXXIV. f. l:.i) dagger-shaped ; the harjie irregularly notched and tnberculated; 

 processes above the penis-sheath very long and slender. 



?. Vaginal ridge convex in middle (PI. XVIII. f 16), with a separate rounded 

 lobe (/) at each side of the orifice. 



Larva green ; oblique lines of pale prominent granules ; head granulose, a row 

 of granules from antenna upwards. 



Hab. Japan to North India. 



Three subspecies : 



a. M. spcrcliiNs .•<pcrchius. 



Smermllius xperchiiis M^n^tries, I.e. (1857) ; Walk , L!xl Lcp. Ins. Ii. M. xxxi. p. 40 (18C4) ; Boisd., 

 Sper. Gin. Up. UH. i. p. 19. n. 4 (1875) ; Staud., in Rom., Mim. Lrp. vi. p S.'iS. n. 221 (1892) 

 (Amur) ; Bartel, in Riihl, Grossschm. ii. p. 158 (190(1) (pai'tim ; Japan ; Amur ; Manchuria ; 

 China); Staud. & Reb., Cat. Lep. ed. iii. p. 99. n. 719 (1901) (Ussuri; Japan; form of 

 djiroit). 



Smeriiilhus dryas, Orza, Lep. Jap. p. 37. n. 80 (18G9) (partim ; Japan) ; Bartel, /.<•. p. ICO (1900) 

 (partim; Japan). 



