1896. | BUTTERFLIES OF THE FAMILY HESPERIID&. 65 
is a broad patch of long silky hairs upon the upper surface of the 
secondaries at the end of the cell, almost entirely covering the cell 
and the origin of the median nervules. In addition, on the under- 
side of the primaries there is a broad patch of moditied scales, 
and the inner margin has a fringe of long hairs, which, ordinarily, 
Neuration of Semalea pulvina, Ploetz. }. 
a. Underside of primary ; >. Upperside of secondary. 
are folded back upon the under surface of the primaries. In 
S. now, Mab., the patch of scales on the upper surface of the 
secondaries is wanting, but upon the primaries on the upper 
surface there is a broad oval sexual band at the origin of vein 2 
below the cell. 
Type S pulvina, Ploetz. 
I have brought these two species together, because of the 
absolute identity of their neuration and the structure of their palpi 
and antennz, and in spite of the wide divergence in the sexual 
stigmata. At first glance, without a microscopic examination, the 
two insects look wonderfully alike. There is, however, a remark- 
able divergence in the sexual stigmata as indicated above. I am, 
however, more and more inclined to the belief that sexual stigmata 
cannot be always accepted as the basis of generic subdivisions, in 
which opinion I know I differ from some authors. 
219. S. PuLvinA, Ploetz. (Plate I: fig. 14.) 
Hesperia pulvina, Ploetz, 8. E. Z. vol. xl. p. 353 (1879). 
Trichosemeia pulvina, Wats. P. Z. S. 1893, p. 53. 
Cobalus carbo, Mab. Bull. Soc. Ent. France, (6) vol. ix. p. elxix 
(1889). 
Hab. Aburi (Ploetz) ; Gaboon (Good) ; Sierra Leone (Mabille). 
“I do not agree with Lieut. Watson in placing this species in my 
genus Trichosemeia. The broad patch of velvety scales upon the 
upper surface of the secondaries is the principal point of resem- 
blance between this species and the type of the genus. In the 
form of the wings and the antenne and the structure of the legs 
it differs. The female is without the velvety area on the second- 
Proc. Zoot. Soc.—1896, No. V. 5) 
