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examples o! poli/dor and Assam specimens of ganesn are indeed considerable. Above, 

 the bright green submarginal band of the forewings of P. ^lolyctor lioisd. is shorter and 

 less conspicuous in gfinesa ; the bluish green patch of the hindwings is broader in 

 (janesa, does not extend beyond the upper median ner\ ule, and has a deeper blue 

 tint; the green scaling of the upper surface of both wings is denser in polydor; 

 beneath, the forewings of ganesa have a broad whitish submarginal band nearly as in 

 P. paris, which gradually widens anteriorly and becomes much shaded with black ; 

 in poli/ctor this band is very narrow, and obviously marked only behind ; the huffish 

 scaling with which nearly the whole of the hindwings of polydor is covered is much 

 more restricted in ganesa. Though typical pjolydor and typical ganesa are thus 

 most readily distinguisbable, there occur specimens wliich comlnue the characters 

 of the two. I have individuals of polydor with a broad green band on the forewings, 

 the bluish green patch of the hindwings prolonged to the abdominal margin, and 

 the huffish scaling of the under surface of the posterior wings much extended, 

 and with the whitish baud on the underside of the forewings as broad as in certain 

 examples of ganesa ; in other individuals of polydor the patch of the hindwings 

 does not reach beyond the upper median nervule, just as in ganesa; in others again 

 the huffish scaling of the underside of the hindwings is as much restricted as in 

 many ganesa. On the other band, in some Sikkim specimens of ganesa the green 

 band of the forewings is broader than in certain individuals of poh/doi; and has the 

 same length ; the patch of the hindwings has .sometimes the same tint as in pjolydor, 

 the huffish scaling of the hindwings below is often more extended than usual, and 

 the whitish band of the forewings below is occasionally much reduced in breadth; 

 in none of my ganesa specimens is the gi-een scaling of the upper surface quite so 

 dense as in polydor. 



The dilTerences between the two "species" are, therefore, not constant, and I 

 am obliged to sink /-". ganesa to the rank of a subspecies of P. polydor. 



(a): P. polyctor Boisd., forma typ. [c?,?]. 



The number of the cottony streaks on the forewings of the male varies from two 

 to five. The red submarginal spots of the under.side of the hindwings appear often 

 also above, especially in the females, which have sometimes all six spots marked. 

 The bluish green patch of the hindwings is in some specimens only of half the 

 breadth of the patch of others. The patch i.s connected with the abdominal margin 

 by means of three greenish spots, situated between the upper median and the sub- 

 median veins; the size of these spots is very variable; in most specimens the 

 posterior spot is absent, in others the second and third are wanting, and in others 

 again all three are obliterated, as in Boisduval's type (according lo the descn|i(ion) ; 

 in the females those spots are apparently always absent. 



The spring and summer broods differ in a similar way as in /'. bianor Cram. 



(«') : ab. gen. vern. peeroza Moore. 

 Sarharia peernza Moore, P. Z. X. p. 2,58 (188-2) (Dharmsala. N.W. Ilimal.). 



Smaller than specimens of the summer broods, and the siilmmrginal red spots of 

 the upperside of the hindwings usually larger in both sexes. 



(/;') : ab. gen. aest. P. jjolydor IJoi.sd. 

 As Boisduval says of his polydor, " Se rapprocliant un p(>u de laadiaon par le 

 port," his type-specimen (now lost ?) seems to have been intermediate in size 



