New or little-known African Butterflies, 15 
purer white, and differing also in the almost entire 
absence of black spots, except those on the underside of 
the hindwing near the base. In these respects IM. marshalli 
somewhat resembles the ? of the type-form of Planema 
esebria (Hewits.), but on the underside, again, and on the 
abdomen, the colouring is much nearer to that of Acrew 
encedon. 
The discoverer and captor, Mr. G. A. K. Marshall— 
after whom I have named this butterfly—informs me that 
he took the two specimens described and one other on the 
Mazoe River, in Mashunaland, near the end of December, 
1894; they were flying very slowly along the edge of the 
bush at from six to ten feet from the ground. Notwith- 
standing their small size Mr. Marshall noticed that on 
the wing they bore much resemblance to Danais chrysip- 
pus, the colouring on the whole being closer to the aspect 
of this butterfly than to that of either Acrwa encedon or 
Planema esebria. 
Fam. HESPERITDL. 
Genus PyrGus. 
Pyrgus delagox, sp. n. 
Allied to P. sataspes, Trim., and P. zebra, Butl. 
Fuscous, with whitish spots. Forewing : in discoidal cell, rather 
beyond its middle, a moderate-sized rather narrow transverse spot ; 
at extremity of cell a larger, subreniform spot ; in discal series, the 
npper three spots are small and contiguous, forming a narrow sub- 
costal transverse mark, but the lower three are larger (especially the 
middle one), separate from each other, and placed in an oblique row 
between third median nervule and submedian nervure ; a sinuated 
submarginal series of seven very small spots; a series of very indis- 
tinct dots on hindmargin. Hindwing: median band represented by 
a rather wide central, subrectangular, somewhat oblique whitish 
marking, bounded by 2nd subcostal and 1st median nervules ; only 
4 very small spots in submarginal series, situated between the ner- 
vules just mentioned and very near hindmargin. UNDERSIDE.— 
Yellowish-brown ; base and costa to beyond middle of forewing and 
base of hindwing closely irrorated with dull yellowish-white. Fore- 
wing : lowest spot of discal series indistinct, geminate ; spots in sub- 
marginal series better defined than on upperside, but hindmarginal 
dots wanting. Hindwing: no sub-basal white marking ; median 
