1896.] BUTTERFLIES OF THE FAMILY HESPERIIDE. 29 
Acleros leucopyga, Mab. Grandid. Madgr. vol. xiii. p. 347, pl. liv. 
figs. 3, 3a (1887); Watson, P.Z.S. 1893, p. 76. 
Hab. Madagascar. 
This species may be distinguished from A. ploetzi, its near ally, 
by the broader extent of the white markings upon the outer 
margin of the secondaries, and the paler, more irregularly clouded 
underside of the secondaries. There are two specimens in the 
collection of Dr. Staudinger labelled as taken at Gaboon by 
Mocquerys, which are almost identical with examples from 
Madagascar. They were taken in September. (Are the locality- 
labels correct in these cases ?) 
108. A. PLoETztI, Mab. (Plate II. fig. 7.) 
Apaustus leucopygus, Ploetz, 8. E. Z. vol. xl. p. 360 (1879). 
Acleros ploetzi, Mab. Bull. Soc. Ent. France, (6) vol. ix. p. clxviil 
(1889). 
Hab. Aburi, Victoria, W. Africa (Ploctz); Gaboon, Cameroons 
(Good). 
ree Mabille has very properly suggested the name ploetzi for 
this species, in view of the fact that the specific name leucopyga 
had already, in 1877, been applied by him to a closely allied species 
from Madagascar. 
109. A. MACKENII, Trim. 
Pamphila ? mackenii, Trim. Trans. Ent, Soc. Lond. 1868, p. 95, 
pl. vi. fig. 8. 
Ancyloxypha mackenii, Trim. 8. Afr. Butt. vol. ili. p. 331 
(1889). 
Hab. Southern Africa. 
This species is very closely allied to A. ploetzi, Mab. (leucopygus, 
Ploetz), but may be distinguished by its somewhat larger size, and 
by the fact that the underside of the primaries is much darker, 
and by the two subtriangular spots of white standing out boldly 
upon this dark ground near the inner margin. 
110. A. pLacrpus, Ploetz. (Plate IT. fig. 19.) 
Apaustus placidus, Ploetz, 8. E. Z. vol. xl. p. 360 (1879), vol. xlv. 
p- 157 (1884). 
Hab. Aburi (Ploeiz). 
The figure of the type given in the plate accompanying this 
article suggests that the original specimen is somewhat faded. I 
am greatly inclined to the view that it represents a somewhat 
rubbed specimen of the species since named A. biguttulus by 
Mons. Mabille, and which may also be identical with the species 
named -A. substrigata by me. In a very long series of specimens, 
numbering nearly one hundred, I find specimens more or less 
worn, which agree well with the figure and description of placidus, 
and others which are undoubtedly very close to, if not identical 
with, biguttulus, and still others, bright and fresh, which are 
