394 Mr. A. R. Wallace on 



6. Thestias marianne, Cramer. 

 Papillo marianne, Cr. 217 C, D, E. Thestias marianne, Bd. Sp. 



Gen. p. 592, $, $. 

 //aft.— India (Coll. Wall., B. M.). 



In a female from Madras, the transverse black band does not 

 pass below tlie end of the cell, and some of this form in the British 

 Museum are small, and have a narrow border ; in another, from 

 Bengal, the whole upper surface is tinged with ochre-yellow. 

 One from the Punjaub is very large and finely coloured. 



7. Thestias pyrene, Linnaeus. 

 Papilio pyrene, Linn. Syst. Nat. ii. p. 762. P. pyrene, Cr. 125 



A, B, C, $ . Thestias pirene, Bd. Sp. Gen. p. 593, $ . 

 Papilio cenippe, Drury, Exot. Ent. pi. 5, f. 2, $ (good). P. 



cenippe, Cr. 229 B, C. 

 Papilio scsia, Don. Ins. China, pi. 31, f. 2 (bad). 



Male. — Drury's figure is the best, and serves well to identify 

 the species. It differs from Cramer's pyrene above, by the wings 

 being more acute, the orange patch less regular, and the black 

 border to the hind wings generally wider. Beneath, it varies 

 from clear yellow — with a small black discoidal spot on each wing, 

 a blackish spot at the outer angle of the uppers, and two or three 

 indistinct orange spots between the discoidal spot and the margin 

 of the lower wings — to ochreish-yellow, thickly speckled with black 

 on the costal region of the uppers and the whole surface of the 

 lower wings, and the two or three orange submarginal spots more 

 diffused. It differs strikingly from Cramer's pyrene in the entire 

 absence of the row of brown spots with white ocelli. 



Female. — Something like Cramer's (Bnippe (229 B, C), and per- 

 haps the same (not 105 C, D). It varies greatly in size and 

 colouring, as pointed out by Mr. Moore, from Capt. Lang's notes. 

 It is always white and black, or nearly so, and offers the greatest 

 difference of the sexes in this genus. 



Expanse of wings (male) 2\ — 2| inches ; (female) 2| — 2^ 

 inches. 



Hah.—"^. India, Bengal, China (B. M., Coll. Wall.). 



The largest specimens of both sexes are from Darjeeling. 

 Those from the N. \V. Himalayas are of moderate size, wl.ile 

 those from the plains of Punjaub and Oude are smaller and less 

 richly coloured. These last are hardly distinguishable from some 

 specimens of T. pirenassa. The two in fact may well be con- 



