BUTTERFLIES OF SAMOA AND SOME NEIGHBOURING ISLAND-GROUPS. 45 



p. 381, PI. I, figs. 10 and 11) ; the form figured (C. athama) is, as pointed out by 

 Dixey, the female of C. jacquinotii Lucas, which has page-priority ; Dixey also 

 points out that Butler's description of a male from Samoa as that of C. athama 

 was quite unjustified. Both the sexes of Lucas' species were taken in " Balaou, 

 New Guinea," a locality which has been variously identified as the Pelew (Palau) 

 Islands or as Vanua Ubalavu in the Exploring group (the Lau group of Fiji), 

 though the latter are nowhere in the neighbourhood of New Guinea. I have 

 not seen specimens from either the Pelew group or the Philippines, but examples 

 from other groups in the Western Pacific (e.g. the New Hebrides and New 

 Caledonia) differ markedly from Samoan and Tongan females in their much 

 yellower ground-colour, and appear much more like Lucas's figure. A female 

 from " Vanua Valava, Fiji," figured by Herrich-SchaefTer (Stett. ent. Zeit., 

 1869, PI. I, fig. 2) is apparently of the present form ; but the only specimen 

 from Fiji that I have seen is a male. 



Variation in the male of C. jacquinotii manaia is slight, and almost confined 

 to the underside of the hindwing and apex of forewing, the colour of which is 

 sometimes much paler than in the type. The female varies very considerably, 

 and there are two main forms. In one of these (PI. II, fig. 10) the ground- 

 colour on the upperside is somewhat darker than in the type, and becomes 

 deep cream, the subapical spots are enlarged and there may be a small extra 

 one posteriorly ; the black band on the hindwing is narrower than in the type ; 

 on the underside the suffusion of white scales is so dense that the apex of the 

 forewing and terminal area of hindwing appear almost pure white. In the 

 other form (PI. II, fig. 12) the ground-colour is paler, approaching pure white 

 in some specimens, the black areas are increased in size and the subapical spots 

 of the forewing small, that in interspace 4 being sometimes hardly visible ; 

 on the underside the markings are as on the upperside, the white suffusion of 

 the dark areas on both forewing and hindwing being so poorly developed that 

 these are sooty-black. In some specimens of this form the subterminal band 

 of the hindwing is entirely without suffusion, but I have not seen any in which 

 there is not a little suffusion of the apical area of the forewing. The two forms 

 are not sharply divided and they do not appear to be seasonal, both forms 

 occurring at the same time and place. Intermediates (like the type female) 

 are much commoner than the extreme forms, and the form with dark markings 

 on the underside as on the upperside appears to be rare. Tongan specimens 

 do not seem to differ in any respect from Samoan ones ; six Tongan males have 



