Butterflies of Mauritius and Bourbon. 433 
list. The number of butterflies recorded is twenty-two, 
but there are probably a few more species remaining to be 
discovered. 
Danaida chrysippus, L. 
8. Danais Chrysippus, Linn. 
Maovritivs. Common in the low country and some- 
times abundant, scarcer above 1,000 feet. It has been 
noticed as being particularly common after a cyclone, the 
rain and consequent dampness probably bringing the pupa 
to rapid maturity. The form aleippus, Cram., has not 
been hitherto recorded. It is exceedingly rare, and I 
believe I am the only individual who has noticed it ; this 
was at Curepipe 1,860 ft., March 12th, 1907. D. dorippus, 
Klug., does not occur, and this is the more interesting 
as H. misippus, form imaria, does occasionally appear. 
Flies I-XII. 
Bourson. I found this common at St. Denys, and saw 
in the museum specimens of alczppus which had been 
taken in the neighbourhood. The transformations are 
well known. 
Amauris phedon, Fabr. 
7. Danais Phedone, Fabr. 
Peculiar to Mauritius aud Madagascar (Mabille) and 
locally known as the “ Banyan butterfly.” Rare in the 
higher elevations, locally abundant on the coast, con- 
gregating in numbers after the manner of the Danaids, 
usually under the shelter of “filao” trees (Casuarina 
equisetifolia). Frequently it flies high among the trees 
and is then difficult to take; at other times it flies low 
and is easily captured. I found it abundant at Morne 
Brabant in the extreme south-west corner of the island, 
in August; also at Blue Bay on the east coast and 
elsewhere. Flies nearly all the year round. The female 
is distinctly uncommon; the male is variable more _par- 
ticularly on the fore-wing, all variation can be found from 
a well-developed spot in the cell to a complete absence ; 
the spot also in the first median interspace is very variable 
in size; the band on the hind-wing varies also in breadth. 
The larva is unknown. 
