82 On Pierine Butterflies of the Genus Terias. 



they are often all well-marked and emerge simultaneously in 

 countries where practically no wet-season exists ; but, on the 

 other hand, in countries where the weather is more or less 

 moist throughout the year the dry forms are either wholly 

 absent or are extremely rare (probably only existing as 

 reversional sports). 



T. amplexa group. 



In this group the outer borders are quite regular that is 

 to say, not widening towards the apex of the primaries, as in 

 the extreme dry phases of the T. hecabe group. 



67. Terias amplexa. 

 Terias amplexa, Butler, P. Z. S. 1887, p. 523 (with cut). 



Christmas Island. 



Our males are all of the wet-season type, and our single 

 female of the dry-season, in the pattern of the under surface. 





