l62 
SOUTH-AFRICAN BUTTERFLIES. 
mon origin with upper radial nervule) and terminating at apex ; upper 
disco-cellular nervule much shorter than lower one. Hind-iuings nar- 
rowly somewhat produced at anal angle, which is prominently but 
bluntly lobed inferiorly ; hind- margin denticulate, and bearing at 
extremity of submedian nervure a short or moderately long rather hirsute 
tail, wider at its base ; costal nervure basally strongly arched, termi- 
nating at apex ; subcostal nervure branched a little before middle. 
Fore-legs of ^ very robust, — femur and tibia about equal in length, 
both densely hairy (especially the latter, which has a terminal external 
spur, and two internal terminal spines), — tarsus thick, scaly, with three 
pairs of strong spinules beneath, several lateral spinules, and a rather 
long terminal slightly-curved claw ; — of ^ less hirsute, — the tarsus 
longer, complete, with short curved terminal claws. Middle and hind 
legs very robust, — femora and tibi« moderately hirsute (the latter much 
shorter and with short terminal spurs), — tarsi long and thick (especially 
first joint), strongly spinulose beneath, with terminal claws short. 
This genus, which includes only the P. Haiyax, Fab., Perion, 
Cram., and Amanga^ Westw., is nearly related to Deudorixj Capys, and 
Zeritis, but differs from all in having only three branches to the sub- 
costal nervure of the fore-wings. In colouring and pattern, especially 
on the under side, these butterflies nearly approach Zeritis, but are 
further structurally distinguished from that genus by their longer, 
more slender, distinctly clavate antennae ; shorter palpi ; more hirsute 
head, body, and legs ; and prominently lobate anal angle of hind- wings. 
Hiibner gave the generic name of Axiocerses to Cramer's Perion, a. 
West-African species ; but I give preference to ChrysorycMa, seeing 
that Wallengren was the first to diagnose the group, taking his Tjoane 
Harpax, Fab.) as the type. 
All the three species are know^n to inhabit Tropical Africa, and 
Perion, Cram., has not been found out of that region. C. Harpax has 
the widest distribution, ranging from the North-Tropical West Coast 
to the eastern districts of Cape Colony ; while C. Amangco appears 
to be proper to the South-Tropical belt, but has occurred in Natal. i| 
Both the South- African species are orange-red above with dark-brown |l 
borders, but Harpax is darker in tint and has blackish spots ; while 
beneath Amanga presents only a few silvery markings near the base, 
in contrast to the numerous golden or brassy spots of Harpax. 
200. (1.) Chrysorychia Harpax, (Fabricius). 
9 Papilio Harpax, Fab., Syst. Ent., App., p. 829, n. 327-328 (1775). j 
^ Chrysorijcliia Tjoane, $ Chr. Thyra, Wallengr., K. Sv. Yet.-Akad. f 
Handl., 1857, — Lep. Rhop. Caffr., p. 44.1 
1 I pointed out that Wallengren' s Thyra was quite distinct from Linne's insect, and sug- 
gested [Trans. Ent. Soc. Lond., 1 870, p. 372) that it might be a well-marked ? Z. Chrymor^ 
Trim. ; but Aurivillius [K. Sv. Vet.-Ahad. IlandL, 1882, p. 117) has satisfactorily determined 
it to be the ? of Tjoane, Wallengr. 
