Butterflies of Southern Africa. 109 
The only specimens Avliicli I have seen both appear 
to be of the female sex, the fresher and more perfect 
of the two having the bands much more decidedly 
tinged with yellow than the other. The species is nearly 
allied to P. Hirce, Drury, judging from a comparison of 
the two specimens Avith Mr. Hewitson's figure of the 
typical form of the $ Hirce {Eurytus, Clerck) from 
Calabar.* It may, however, be readily distinguished 
from the latter by the absence in the fore iviriys of the con- 
spicuous white band which in the $ Hirce extends from 
the inner-margin towards the sub-apical band ; and by 
the fuscous base of the liindwinf/s, which in the $ Hirce 
is occupied by the white of the band. In P. imitator the 
sub-apical band of the forewings is much longer and nar- 
rower, and the 2nd and 3rd cellular spots are in all the 
wings nearer to the base. 
Mr. H. C. Harford, now of H.M. 99th Eegiment, took 
a single specimen, on the 21st January, 1868, in a narrow 
bush-path near the Little Umblanga, and describes it as 
settled on the ground, with the wings expanded, sucking 
moisture from the dam]) sand. The only other example 
known to me was captured by Mr. Walter Morant, on 
the 8th June, 1869, near Pinetown : it is noted by him as 
flying near the ground on a hillside in the vicinity of 
thick bush. Mr. Harford observes that these two indi- 
viduals were the only ones ever seen by him. 
P. imitator is a close mimicker of Acrcea Aganice, 
Hewitson, $, f differing principally in the forewings, in 
the minor features of possessing some black spots near the 
base, and a slight inner-marginal whitish suffusion, and of 
wanting a separate white spot at the extremity of the sub- 
apical bar. The spots at the base of the hindwings are 
not so numerous as in the Acraa ; and the yjalpi are yel- 
low, instead of black spotted with white. The spotting of 
the head, thorax, and base of abdomen, is almost identical 
in the two insects ; and in both the abdomen is ochreous 
on the underside, while the ochreous abdominal spots and 
* Exot. Butt., IV., Diadema III., f. 11 (Part 66, April, 1868). 
f I have previously described (Trff«,s\ Ent. Soc. Lond., 1868, pp. 79—81, 
pi. v., f. 3; and Trans. Li /in. Soc, vol. xxxvi., p. 516, pi. xlii., f. 2) 
another species of the genus Pscudacra^a, {Pannjjea, HUbn.), which copies 
the $ Acrena Ago.ulce so well as to deceive the collector, viz.: P. Tar- 
qnlnia, mihi; but in that species there is an evident inclination, especially 
in the yellow-banded J , in the direction of mimicking the common 
Danais Echcria, StoU. 
