388 
SOUTH.AFRICAN BUTTERFLIES. 
Genus PSEUDACR^A. 
Pseudac7'cea, (" Section A. Sub-Section b, Division of Diadema) and 
Panopea ("Do. do., Divn. * of Do."), Westw., Gen. Diurn. Lep., ii. p. 
281 (1850). 
Panopea^ Trim., Trans. Ent. Soc. Lond., 1868, p. 79. 
Imago. — Allied to Diadema, Boisd., and Euplmdra, Hiibn. Head 
of moderate size, downy above, hairy in front ; palpi elongate, conver- 
gent, densely scaly, ascendant to about level of forehead, — second joint 
long, tufted above and along inner edge, and sometimes thinly hairy 
beneath, — terminal joint short and blunt ; antennce long or very long, 
rather thick, with the club very elongate and very gradually formed. 
Thorax long and thick, densely downy beneath, more thinly so 
above, and moderately hairy posteriorly. Forc-ioings elongate, more or 
less produced apically, much as in Diadema ; first subcostal nervule 
originating much more towards base, and second considerably more 
before extremity of discoidal cell than in Diadema, and third one origi- 
nating not so far beyond cell ; lower disco-cellular nervule stronger, 
more arched. Hind-ivings with costa, after basal convexity, very slightly 
arched ; hind-margin more or less sinuated ; anal angle sometimes 
decidedly prominent in J ; neuration as in Diadema ; discoidal cell 
rather shorter (in P. Semire (Cram.) exceedingly short) ; lower disco- 
cellular nervule quite distinct, more or less curved, usually joining 
median nervure where second and third nervules originate ; groove 
formed by inner margins not so deep or complete as in Diadema. 
Ahdomen very compressed laterally ; much longer than in Diadema 
or Euralia. 
With the exception of the green-spotted Semire, Cram., and Imerina, 
Hewits. (=: Glaucina, Gu^r.), and the rufous-and-black Hostilia, Drury 
— which have the hind-wings much produced in their inferior half, and 
constitute a section apart — all the species of this Ethiopian genus are 
in both sexes distinctly imitative of various species of Acrceince, the $ 
of two only (P. Tarquinia and P. Delagoce, Trim.) showing more resem- 
blance to two species of Amauris, of the sub-family Danaince. It 
would be difficult to imagine more perfect mimicries than several of 
these — e.g., that of Planema Gea (Fab.), $ and by Pseudacrcea 
Hirce (Dru.), J and $ ; of PI. Aganice (Hewits.), $ and by Ps. 
imitator. Trim,, ^ and $ ; or of P. elongata, Butl., by Ps. meta- 
2Jlanema, Butl., $ — extending as they do not merely to colouring and 
pattern, but to outline of wings and such minutias as the colour of the 
palpi and the spotting of the thorax and abdomen. Almost as per- 
fect also are the imitations of Acrcea Zetes (Linn.), $ and by Ps. 
Boisduvalii, Doubl., $ and and of A. Acara, Hewits., J and by 
Ps. Trimenii, Butl., $ and The exactness of these and of some other 
mimicries among African butterflies can best be estimated by the fact 
