the Butterflies of Mauritius. 331 
There isa specimen from Mauritius in the collection of the British 
Museum. 
4.* Terias Rahel, Fabr. 
I refer to this well-known African species T'ertas pulchella of 
Boisduval, having been unable to discover any characters suffi- 
cient to. separate the latter from the continental form. The breadth 
of the black border varies slightly in the ¢. Specimens from 
Madagascar, given me by Mr. Caldwell, are smaller and darker 
than those I captured in Mauritius, and resemble the-example 
figured in the “‘ Faune Entomologique de Madagascar, &c.” The 
insect is very common in some localities, especially at Réduit and 
in the Pamplemousses Gardens. Its flight is rather active, but it 
usually keeps close to the ground, and settles among the herbage 
at short intervals. 
5. Terias Floricola, Boisd. 
There is little to separate this insect from 7’. Hecabe, Linn., 
excepting its smaller size and the much narrower black border of 
the fore-wing ; but as these characters appear to be constant, it is 
perhaps as well, in a group of species so extremely difficult to de- 
termine as are those of the genus Terias, to keep Floricola distinct 
until further knowledge afford the means of deciding the question. 
This butterfly is more generally common in Mauritius than 7’, 
Rahel, and may be found in the same localities. In the Pample- 
mousses Gardens I found it flying in company with 7. Rahel, and 
on one occasion captured a specimen of each species, as the two 
were sporting and chasing each other. M. Maillard states that, 
in Bourbon, “‘ the 2 is much less abundant than the ¢.” 
6. Eupleea Euphone, Fabr. 
A common and conspicuous species, gregarious in its habits, 
and to be found in gardens and wooded spots. Its flight is usually 
about trees and shrubs, especially such as are in flower; and is 
not unlike that of Danais Chrysippus, though more floating. The 
% is rather duller in colour than the ¢, and has less of the 
faint violaceous gloss. Both sexes have the peculiar odour so 
remarkable in butterflies of this family; and the ¢, when han- 
dled, protrudes a pair of curious anal appendages, consisting of an 
elongate bright yellow filament, ending in a fascicle or tassel of 
