14 Mr. R. Trimen on 
dull yellowish creamy, crossed by fine fuscous neuration ; hindwing 
in basal area with 13 or 14 small whitish-ringed black spots. Fore- 
wing : fulvous-ochreous area as on upperside, and also fuscous area 
except beyond subapical white bar and along hindmargin—where 
(but for a narrow external edging to the bar) the fuscous is replaced 
by dull yellowish-creamy, the latter narrowing and becoming macular 
from lower radial to lst median nervule. Hindwing : hindmarginal 
fuscous border very narrow, almost linear, throughout ; the follow- 
ing small black spots (more or less imperfectly ringed with whitish 
scales), vid. : 1 at base ; 1 close to base, between costal and subcostal 
nervules ; a sub-basal transverse series of 3 (the middle one in 
discoidal cell) between costal and submedian nervures ; 1 in dis- 
coidal cell near extremity ; 2 (one above the other) on disco-cellular 
nervules ; and a transverse series of 6, from costa beyond to sub- 
median nervure before middle. 
Head, thorax, and legs, black with white spots; antenne and 
palpi black ; abdomen creamy-ochreous-yellow, mixed with greyish 
on back and sides. 
In the pattern of the upperside this Zimacrva has some 
resemblance to the type species from West Africa. JZ. dar- 
winia, Butl. (Lep. Exot., pl. xxviii, fig. 8), but is easily 
distinguished by having the costal fuscous border in the 
forewing and the hindmarginal one of the hindwing very 
much narrower, and the subapical bar of the forewing 
pure-white instead of fulvous-ochreous. The underside 
of M. darwinia is not figured, but Dr. Butler notes it (op. 
cit., p. 104), as being almost as in Acrwa cynthia, Drury, 
so that it must be very widely different from that of JZ. 
marshalli. A very close ally of M. darwinia from 
Camaroon, Jf. apicalis, Smith and Karby (Rhop. Exot., 
p. 41, Afr. Lyc. pl. x, figs. 6, 7, 2 —1890), is also an 
accurate mimicker of Acreva cynthia on the underside, but 
has a pale yellowish subapical bar in the forewing.* 
This interesting species has all the aspect of an Acrea, 
but is not an exact mimicker of any species known to me, 
coming on the whole nearest to A. encedon (Linn.), but 
having a much brighter fulvous-ochreous field on the 
upperside, with the subapical bar in the forewing of a 
* A very distinct species, 1/7. charmian, Smith and Kirby (op. cit., 
p. 42, figs. 8, 9), also from Camaroon, imitates (but less closely) 
Planema elongata, Butl. g. 
