348 Mr. A. R. Wallace on 



(luced. Above : upper wings marked nearly as in T. fyramus, 

 but the ground colour is blacker, and the basal patches bluer 

 and less elongate; lower wings with the red patch at the 

 base much smaller, not filling one third of the cell, below it a 

 broad transverse bluish-ashy band, paler at the abdominal mar- 

 gin, a large ochre-yellow patch at the anal angle divided into 

 four parts by the nervures ; outer angle black, without whitish 

 markings. Beneath, almost exactly as in T. pyramus, but the 

 red semicircle does not extend quite so far down, and the poste- 

 rior markings of the hind wing are more clearly defined and of a 

 nearly uniform ochre-yellow. 



Expanse of wings 3 inches. 



Hub.— Malacca, Mount Ophir (Coll. Wall.). 



This insect differs so clearly in form, size, marking, colouration 

 and locality from its allies, that I have felt obliged to give it a^ 

 different name, although its general appearance is such that many 

 Entomologists would at once pronounce it " a mere variety." 

 Male specimens only were taken by myself at Malacca. 



b. Bdladonna group. 

 10. Thyca belladonna, Fabricius. 



Papillo belladonna, Fab. Ent. Syst. III. i. p. 180 ; Don. Nat. Repos. 



pi. 35. 

 JPieris Horsjieldii, G. R. Gray, Lep. Ins. Nepal, t. 8, f. 2. 



Hab.—^. India (Coll. Wall., B. M.). 



The specimens vary in size, form and colouration. Some are 

 very black, with the spots smaller, and scarcely a trace of yellow 

 on the abdominal margin above. 



The female is brown-black, with the spots yellowish-white. 

 This sex seems very rare, as I have only seen a specimen in the 

 Collection of Mr. Hewitson. 



11. Thyca sanaca, Moore. 



Pier'is sanaca, Moore, Proc. Zool. Soc. 1857, p. 103, pi. xliv. 



f. 4 (err. 6), $ . 

 //at.— Darjeeling (Coll. B. M.). 



Female, — Above, pale sulphur-yellow, the dark parts as in the 

 male, but much less diffused ; beneath pale yellow-white, the yel- 



