196 Dr. A. G. Batler— ^ Revision of the It is probable that other described Madagascan insects belong also to the genus. c d Genitalia of Adorodocia. a, S ) lateral view ; b, end view. c, 5 J 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 Oenus Precis, loith Notes on the Seasonal Phases of the Species. By ARTHUR G. Butler, 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 falcate 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 Satyringe. In several cases where it had been surmised that one I
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