1896.] BUTTERFLIES OF THE FAMILY HESPHRIIDA. 67 
224. B. 11s, Ploetz. (Plate V. fig. 17.) 
Hesperia ilias, Ploetz, 8. E. Z. vol. xl. p. 355 (1879). 
Hab. Guinea (Ploetz) ; Gaboon. 
What I take to be the Hesperia ilias of Ploetz—forming my 
conclusion from the description of the species given by the author 
and from a copy of his unpublished drawing of the same—is the 
insect figured on the Plate. It comes nearer meeting the require- 
ments alike of description and of figure than any other West- 
African species known to me in nature. 
225. B. xytos, Mab. (Plate II. fig. 13.) 
Pamphila xylos, Mab. Ann. Soc. Ent. France, (6) vol. x. p. 31, 
pl. iii. fig. 8 (1890). 
Hat. Gaboon, Cameroons, Sierra Leone. 
Mons. Mabille (/. c.) states that he has sufficiently characterized 
this species in the ‘ Bulletin’ of the preceding year, and contents 
himself therefore with a figure. By reference to the ‘ Bulletin ’ 
for 1889, I discover that his memory was at fault. He did not 
describe P. aylos in the ‘ Bulletin’ of the year before. Our only 
knowledge of the species, therefore, must be derived from the 
figure given in the plate, which, fortunately, is quite recognizable. 
It represents a damaged male of a species which is quite common 
on the tropical western coast of Africa. I have a long series of 
specimens in which, singularly enough, the females are more 
numerous than the males. The figure given by Mons. Mabille is 
that of a male minus the abdomen. The female which is repre- 
sented in the plate does not differ materially in the location and 
style of the marking from the male, but is generally much larger. 
I discovered that Mons. Mabille had mingled with this species, in 
his collection and that of Dr. Staudinger, specimens of the 
following species, which is abundantly distinct, though presenting 
a superficial likeness. 
226. B. ALBERTI, sp. nov. (Plate II. fig. 21.) 
3. Body and appendages black. Abdomen produced beyond 
the anal angle of the secondaries. The wings on the upperside 
are black, with whitish fringes, those of the primaries checkered 
with black at the ends of the nervules. There are no spots on 
the secondaries. The primaries are ornamented with three ‘small 
subapical spots in the usual position, by two large and conspicuous 
subquadrate spots, one on either side of vein 3 at its origin, the 
upper one being the smaller of the two. In many specimens 
there is also a small and faint spot on cell 1, just below the large 
subquadrate spot on cell 2. On the underside, the wings are 
marked precisely as on the upperside, save that the inner margin 
of the primaries is pale, and in some specimens there are traces of 
an obsolete series of pale submarginal markings on the secondaries. 
@. The female is marked like the male, save that on cee under- 
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