PBOCEEDINGS OF THE NATIONAL MUSEUM. 269 



the extremity of vein 2 toward the end of the cell, and serves to 

 delimit the orange red apical iiatcli from the white inner area of the 

 wing along the lower half of its inner margin. There is a short, pale 

 orange, transverse bar at the end of the cell. The secondaries luive the 

 ends of the nervules lightly tipped witli black. On the under side the 

 primaries are white, with the orange red of the ai)ical patch faintly 

 showing through from the upper side. There is a nnnute black spot 

 at the end of the cell. The costa and the apical area are laved with 

 pale yellow, and profusely irrorated with i)alebrown spots and strig;e. 

 The secondaries on the under side are i)ale yellow, profusely covered 

 throughout with pale brown spots and strigip like those on the prima- 

 ries. The body is blackish above and pale j^ellow below. The antennae 

 are black. 



Female. — Like the male, but the black subapical transverse line 

 delimiting the oi-ange-red apical patch on its inner side is in this sex 

 continued across the wing to the costa, instead of terminating, as in 

 the male, before reaching the end of the cell, and there is a black spot 

 at the end of the cell on both the primaries and the secondaries. 



Expanse of wings, 28-38 mm. 



There are seven males and one female in the jSfational ^Museum col- 

 lection, all from Aldabra. Two of the males are very greatly dwarfed. 



Genus TERACOLUS, Swainson. 



TERACOLUS ALDABRENSIS, new species. 



(riate A'lII, i\gs. 7, S. i 



Male. — The body is grayish above and white below. The wings are 

 white on both sides. The primaries are narrowly edged with gray on 

 the costa, and are also marked on the costa just before the apex with 

 a small black spot. The secondaries on the under side have the costa 

 laved with yellow near the base. 



Female. — The female has the wings broader and not so acute at the 

 apex as the male. The apical area on the upper side is broadly black, 

 inclosing six white hastate spots, of which the second from the costal 

 margin is the largest and those below it regularly diminish in size. 

 The sixth in the descending series located between the extremities' 

 of veins 2 and 3 is separated from the inner white ])ortions of the wing- 

 by an obsolescent grayish shade, which in some si)ecimens is wholly 

 wanting, thus reducing the number of white hastate spots to five. 

 On the under side the secondaries are pale yellow throughout, and 

 the primaries have the costal margin and the apical area of the same 

 color. There is a subapical transverse series of three obscure grayish 

 spots upon the i)rimaries. 



Expanse of wings, male and female, 35 mm. 



There are five males and four females in the National Museum collec- 

 tion, all labeled as from Aldabra. One of the males is aberrant, dis- 

 ])laying a conspicuous black spot at the end of the cell of one of the 

 secondaries on the lower side. 



