352 Messrs. J. J. Joicey and W. J. K aye's Notes on 



comparisons between the black hind-wing forms of the 

 two species are far more satisfactory. 



A Comparison between the Black Hind-wing Forms of 



MELPOMENE AND ERATO. 



A Comparison between the Streaked Hind-wing Forms of 



MELPOMENE AND ERATO. 



We have sketched a map to show the range of dis- 

 tribution of the variable melpomene with erato in relation 

 to other races of the two species which are more or less 

 constant to the south-east and to the north-west. Thus 

 at Para melpomene is present as thelxiope, while erato occurs 

 as amazona, and these two forms are more or less constant. 

 The erato amazona is very fixed, while the melpomene 

 thelxiope' varies only in the amount of yellow spotting, but 

 not to any extent. Only rarely are such forms as aglaope 

 to be met with. In British Guiana to the north-west the 

 other extreme is met with. Melpomene occurs typically 

 and scarcely varies at all, and incidentally is rather rare, 

 while erato is represented by the form magnifica, is also 

 very constant, but is very abundant. 



Further to the north-west in Trinidad the two species 

 are also constant. Melpomene is slightly changed to 

 euryades, while erato becomes hydara and is constant. 

 Both species are common, but erato is a good deal the 

 commoner. The interesting places to get material from 

 now would be east of the Berbice River in British Guiana 



