174 LEPIDOPTERA INBIGA. 



patches in the males (hereinafter described) that the species can be correctly- 

 separated. 



Characteristics of the Male. — In the males of certain species of Calysisme there 

 is a difference in the position and size of the glandular patches of scales, which 

 normally occur on the underside of the forewing, and also on the upperside of the 

 hindwing (where they are overlapped by a tuft of hair), in all the species of the 

 genus, this difference being also accompanied by that of the colour of their clothing 

 scales, and by the shape of the scales themselves. Firstly, we find, as in the species 

 which we have determined to be the true mineus of Linnaeus, that the glandular 

 patch on both wings is small, and the patch on the underside of the forewing situated 

 upon the onidcUe of the submedian vein, both, however, being clothed with blackish 

 scales ; these scales, as seen under the microscope, are densely packed, but loosely 

 raised and overlapping, are large, broad, oval, and with even front-edge. Secondly, 

 in the species named visala, and which hitherto had been erroneously identified by 

 modern entomologists as representing the Linnsean mineus (as detailed further on), 

 the glandular patches are elongated, the patch itself on the underside of the fore- 

 wing being two-thirds larger than that in the true mineus, and extends from the middle 

 of tlie vein to the transverse discal band, both patches, moreover, being clothed with 

 pale yellow scales, which are large, rather long, and broadest anteriorly, with even 

 rounded front-edge. Thirdly, another difference occurs in the species which we have 

 named intermedia, where the patch on the underside of the forewing is of an inter- 

 mediate size and length, being nearly twice the size of that in mineus, occupying 

 a similar middle position on the submedian vein, and in which the clothing scales are 

 dark brown, somewhat longer, narrower, and anteriorly more curved. And fourthly, 

 we find a diflference in the shape and size of the ordinary patch on the upperside of 

 the hindwing, as occurs in the species we have named Horsfieldii and Distanti (and 

 described among the Indo-Malayan allied species), wherein the sub-basal tuft of 

 hairs only partially overlaps a very prominent and abnormally elongated patch of 

 bright yellow scales, the patch itself extending from above the base of the first sub- 

 costal and then bending through the interspace between its two branches to nearly 

 half-way towards the outer margin of the wing, its end thus being conspicuous 

 beyond the hairy tuft. 



CALYSISME PERSEUS.* 



Wet-Season Bhood (Plate 59, fig. 1, la, b,(Jlc, d, ? ). 

 Papilio Blasius, ,Fabricius, Ent. Syst. Suppl. v. p. 426, No. 488-9 (1798). 



Mycalesis Blasius, Butler, Proc. Zool. Soc. 1867, p. 720, fig. 4, $ ; Catal. Fabr. Lep. Brit. Mus. p. 34 

 (1869) ; Catal. Satyr. Brit. Mus. p. 137 (1868). Distant, Ehop. Malayana, p. 52, pi. vii. fig. 7 $ 



* Perseus being the oldest name given to this species, it consequently takes precedence of Blasius. 



