( 23 ) 



<^?. Antenna much slenderer and obviousl_y longer in both sexes than in 

 s])ecimens of nfro/jos of the same size ; the middle segments in tlie ? barely three 

 times as high as long (PI. LX. f. 21, lateral view). Anterior tibia longer than 

 in atropos, first segment (PI. LXIV. f. 2) slenderer, and, like the other segments, 

 with less spines than in either atropos or lachesis ; the lateral apical spines 

 obviously prolonged ; the number of spines individually variable as in the other 

 species ; middle tibia as long as the first tarsal segment ; hindtibia equal in length 

 to tarsal segments 1 to 3. 



(?. The ventral process of the harpe (PI. XXXV. f. 3) almost vertical on the 

 plane of the clasper, its broader side nearly horizontal ; the second process triangular 

 as in atropos, its broader side dorso-veutral (vertical) ; both processes simple or 

 indistinctly notched. Tenth segment represented by PI. XXVI. f. 20. 21. 



?. Aperture of vagina without process, but there is a mesial carina running 

 jiroximad from the rim of the opening. 



Larva : according to Swiuhoe, I'roc. Zool. Soc. Lond. p. 290. n. 25 (1885), 

 variable in colour like that of A. lachesis ; those feeding on potato bright canary 

 yellow with violet stripes, those feeding on jasmine. Datura, Colea, and Eri/thrina 

 green with purple stripes bordered with yellow. Swinhoe does not give a distinctive 

 character between the larvae of lachesis and sti/x. Moore, I.e., figures the larva 

 of st)/.v as green with yellow stripes. Swinhoe may have confounded the larvae of 

 the two species. Further researches are necessary. — Food : Sesanmm, Daturii, 

 So/anum, Coccinia, Colea, etc. 



Hal). Indo-Malayan Subregion as far north as Japan, eastward to Ceram and 

 Kisser, westward occasionally occurring in Asia Minor ; one specimen received 

 from Barberton, Transvaal (most likely imported to S.E. Africa on board a ship). 



Two subspecies : 



a. A. sf'/.r sfi/.r. 



*Sjilii>ix (Achcroutid) xti/x Westwood, I.e. 



Aclicront/a tttyx, Moore, Proc. Zool. Sm: Loml. p. 79:! (18Ga) (Bengal) ; id., Lq>. Cei/l. ii. p. V. t. 7(.". 

 f. 1. la. b. c. (/., !.,p.) (1882) ; Fors., 7V. Kiit.Soc. Loml. p. 3'.)2 (1884) (larva & pupa uoticeJ) : 

 Swinh., Proc. Zool. Soc. Loml. p. 290. n. 25 (1885) (Poona ix., Bombay ix. x. ; /. sound, colour 

 variable ace. to food) ; id., I.e. p. 435. n. 14 (188l!) (Mhow, ix.) ; Warr., ibkl. p. 293. n. 3 (1888) 

 (Campbellpore, vi.) ; Sviinh., Jouni. Jloiuhai/ N./L Soc. i'li. p. 119. n. 13 (1888) (Karachi, vii. 

 viii.) ; Dudg., ib!d. xi. p. 400. n. 88(1898) (.Sikhim ; Bhutan ; up to 0(100 ft. ; iv.-vi) ; Nurse, 

 ibkl. xii. p. 513 (1899) (Cutch). 



Achcrnnlia medn^n, Moore, I.e. (1857) (partim). 



Moiiiluca Styx, Kirby, Cat. Lcp. Met. i. p. 700. n. 1 (1892). 



<S ? . Forewing above with tawny russet streaks, and a patch of the same 

 colour beyond the greyish white discal lines. 



Ilah. Continental India : N. India to Ceylon and Tenasserim. 



h\ the Tring Museum 6 c?<?, 8 ? ? from: Ceylon; South India; Ajmere, 

 August ; Calcutta ; Khasia Hills ; Sikkim ; Chittagong Hills ; Tenasserim. 



b. A. Styx crathis nom. nov. 



(?) Spectrum cIiaro)i Billberg, Etimn. Iiis. p. 83 (1822) (?iom. imil. ; Java). 



*A,lierontiii medusa Moore, in Horsf. & Moore, Cat. Lep. Mus. E.l.C. i. p. 207. n. 614 (1857) (sub 

 syn. ; partim ; Java, Penang) ; Butl., Tr. Zool. Soc. Lond. ix. p. 697. n. 2. t. 92. f. 10 {I., p.) 

 (1877) (Java, China, Philipp., "East India"! Japan) ; id., Illu.'itr. T,,/k Spec. Lep. IJet. B..U. 

 iii. p. 3. t. 41. f. 5 (1879). 



