196 Dr. A. G. Butler—A Revision of the 
It is probable that other described Madagascan insects 
belong also to the genus. 
=] 9 
a 
Genitalia of Adorodocia. 
a, 6, lateral view; 6, end view. 
c, 9, ventral view; d, dorsal view. 
In order more effectually to correct my mistake as to the 
genitalia of these insects, I reproduce here the figures given 
last month, with the correct description of them. 
XXIX.—A Revision of the Butterflies of the Genus Precis, with 
Notes on the Seasonal Phases of the Species. By ARTHUR 
G. Butter, Ph.D. 
DuRING a recent rearrangement of the Museum collection of 
the genus Precis 1 paid particular attention to the seasonal 
variation of the species, which, as Mr. Guy A. K. Marshall 
and others have pointed out, are often very remarkable. I 
found that by carefully studying the characters already noted 
by observant collectors there was in no case any difficulty 
in distinguishing the dry and wet phases, although the 
determination of the intermediate phase was necessarily some- 
what arbitrary. 
In the African forms of Precis the wet phase is, I believe, 
invariably smaller than the dry phase; but in the Oriental 
types this rule is usually reversed. ‘This would tend to show 
that the dry phase in Africa had been better nourished and 
probably been a shorter time in the pupal condition than that 
of the Asiatic and Australasian forms. 
The dry phase throughout the genus tends to have a more 
faleate form of front wing and a far more leaf-like character 
of under surface than the wet phase; in many species also the 
ocelli on the wings are reduced to mere points in the dry 
season, as in the Satyrine. 
In several cases where it had been surmised that one 
