116 Mr. Roland Trimen oii 
tlian about middle of hind margin. Underside. — Rather 
paler in ground-colour, but otherwise quite as in $ . 
In outline the wings of the $ are more even and blunted, 
the foreicinfjs being less elbowed below apex, but Avith a 
slight prominence at end of 1st median nervule. 
A streak margining the front of each eye ; another at 
lateral base of each paljuis, and 6 spots on each side of 
abdomen (the latter edged with black) silvery-white. 
General colouring of body fuscous-ochreous, with two 
longitudinal Avhitish stripes on each side of breast ; legs 
ochreous, with Avhitish femora. 
A $ exam))le from ]\Iurraysburgh differs from other 
specimens in the great breadth of the fiiscous bordering, 
particularly in the forewings. 
There is a series of variations wdiich leads from Z. 
Malagrida, Wlgrn., in the direction of Z. Argyras-pis, 
but the latter, which is the largest and finest form I have 
seen, appears to be the only one sufficiently well-marked 
in both sexes to admit of separation as a species. From 
the type Z. Mulagrida (to Avhich j\I. Wallengren, avIio 
has seen specimens Avhicli I have forwarded to him, informs 
me must be referred the " var. Aglaspis'^ of Rhop. Afr. 
Austr., ii. p. 272), Z. Argyras-pis seems to be constantly 
distinguished by the very broad field of orange- fulvous , 
which extends to the costal edge of foregoing s on the upper- 
side, and by the much brighter, more clearly defined, and 
rounder silvery spots of the underside. As regards the 
latter, it is very noticeable that tlie spots of the hind-mar- 
ginal row in the hindwings are not snggitate, and that 
those of the roio beyond the middle are fur more irregu- 
larly placed than in JSlalagrida, and present no a])proacli 
to the continuity Avhich almost forms a stripe in that 
species. In addition to these distinctions should be men- 
tioned the much larger size of Argyraspis, and the 
different outline of the wings, Avhich latter consists in a 
marked prominence of the apical region of the forewings, 
and the production of the slight prominences in the hind- 
Avings of Malagrida. at the ends of the sub-median nervure 
and 1st median nervule into distinct pointed tails. 
Dr. Kannemeyer Avas the first to communicate to me 
this striking form, in the- shape of a ? taken near 
Burghersdorp, in the Albert Division of the Cape Colony. 
Mr. Mushett, in 1864 and in 1870, sent me examples of 
both sexes from ISIurraysburg. jNIr. E. L. Layard shoAved 
me a specimen taken by him near Beaufort (West), Avhich 
