50 
SOUTH-AFRICAN BUTTERFLIES. 
The genus Danais, also numerously represented in the Oriental Begion, ! 
has but two species known to inhabit the African continent, viz., the ' 
very widely- spread D. Chrysippus (Linn.) and a variety of D. Limniace 
(Cram.) The ten remaining Ethiopian Danaince belong to the endemic 
genus AmawHsj very closely allied to Danais. 
South Africa possesses only four known species of the Sub-Family, 
viz., Danais Chrysijopus, and three species of Amauris, two of which 
inhabit also South Tropical Africa, while the third, A. Eclieria (Stoll), 
has occurred north of the equator at Fernando Po. All these four 
species are the direct objects of the remarkable mimicry by butterflies j 
of other groups which has been mentioned above, and the known cases 
of which in South Africa are tabulated at p. 37. 
The plants eaten by the Danainm larvaa mainly belong to the 
Orders Asclepiadacem and A^jocynaccm ; but according to a note by Dr. . 
Thwaites (Moore's Lepicl. of Ceylon, i. p. 2), some of them in Ceylon I 
feed also on species of fig. 1 
Genus DANAIS. 
Danais, Latreille, Encyc. Meth., ix. p. 10 (18 19), [Part]. 
Euplaia, Fabricius, Syst. Glossat., in Illiger's Mag., vi. p. 280 (1807), [Part]. 
Danais, E. Doubl., Gen. Diurn. Lep., i. p. 89 (1847), [Part]. 
Imago. — Antcnnm rather short, about half as long as the whole 
body, from -J to -| the length of the fore-wings, gradually but distinctly 
clubbed. Fore-wings prolonged in apical region ; apex rounded ; hind- 
margin slightly hollowed ; inner margin rather prominent in basal \ 
half ; first subcostal nervule given off a little before the end of dis- | 
coidal cell, and ending freely on costa, — second at end of cell, 
immediately above junction of upper radial nervule, — third midway 
between second and fourth, — fourth terminating at apex, — fifth a little 
below apex ; disco-cellular nervules forming a rather acute angle at 
junction of lower radial nervule. Hincl-iuings rather elongate, but 
obtusely rounded ; costa nearly straight ; discoidal cell rather short, 
its extremity widened, obliquely closed by lower disco-cellular nervule, 
which forms an acute angle with third median nervule ; on lower side ! 
of first median nervule, or between it and submedian nervure, the $ 
with a small pouch or sac, in some species free and very prominent 
on the under side. Fore-legs very small, about equal in size in the 
two sexes ; tarsi in the ^ one- or indistinctly two-jointed, in the ^ 
indistinctly three- or four-jointed. Middle and hind legs with tarsi 
well spined ; the terminal claws long, without pulvillus or paronychia. 
Abdomen considerably shorter than inner margin of hind- wings. 
Larva. — A pair of long dorsal filaments on the third segment ; a 
similar pair of shorter ones on the twelfth segment ; sometimes (as in 
D. Chrysippns) with a third pair of moderate length on the sixth segment. 
