the Butterflies of Mauritius. 335 
case of Lepidoptera collected in Pamplemousses Gardens by the 
son of the Superintendent. Mr. Colville Barclay gave me one of 
two specimens in his possession, taken in the Moka district. 
This example is a @, and presents on the fore-wing a transverse 
sub-marginal row of four bluish-white spots, of which the first is 
largest and is edged both above and below by violaceous scales. 
On the under surface, the greenish-bronzy lustre is very appa- 
rent; and there is a conspicuous white marking (not mentioned or 
delineated by Boisduval) on the costa of the hind-wing, immediately 
before and adjoining the reddish transverse streak. In spite of 
the very different outline of wings, the general coloration of this 
butterfly bears considerable resemblance to that of Eupleea Eu- 
phone, and I can well imagine its escaping notice if flying in com- 
pany with the latter species. 
14. Neptis Frobenia, Fabr. 
This does not appear to be common, as I only met with about 
half-a-dozen examples. It haunts sheltered wooded spots, usually 
keeping about a particular tree or tall shrub for some time. Its 
flight is quite that of a Limenitis. I only found it in the Moka 
district, at Réduit and Riversdale. Boisduval records the species 
as a native of Madagascar. In Bourbon, where Frobenia does 
not occur, its place is occupied by the nearly related form N. 
Dumetorum, Boisd. 
15. Diadema Bolina, Linn. 
I chanced suddenly upon the only specimen of this well known 
butterfly that I observed in Mauritius, at the edge of a small 
plantation in the Moka district. Sir Henry Barkly saw another 
example while I was in pursuit of the first: both were males. M. 
Maillard notes the species as “not rare” in Bourbon, and (as 
well as Boisduval) records the occurrence there of the pale variety 
ofthe ¢ ,named Inaria by Cramer. It is very interesting to observe 
how this insect, the 2 of which so precisely imitates the appear- 
ance of Danais Chrysippus, almost rivals its model in geographical 
range, though it does not appear to have yet extended into 
Southern Europe. Its occurrence in parts of the New World,* 
where Chrysippus is unknown, seems to be regarded by many 
Lepidopterists as accidental; among others by Mr. Bates (Proc. 
* A specimen from Jamaica is included in the British Museum Catalogue ; 
Boisduval gives “ Guiana,” and Doubleday and Westwood, ‘‘ Guiana, Cay- 
enne and Surinam,” as habitats of Bolina. 
