groui-) of Butter files, Potaro District, British Guiana. 413 



noted tliat the Lycaenids here are all very uniformly of a 

 blue shade of colour, and doubtless amongst themselves 

 they offer protection in some sort of way. 



By far the most numerous, conspicuous and characteristic 

 group of butterflies is the large Ithomiine, Lycoreane, and 

 Heliconine group. The number of individuals contained 

 within this series, certainly more than equals all the other 

 butterflies to be found in most of the months of the year 

 and probably in every month. This group is composed 

 of the following species in their respective Families and 

 Subfamilies : — 



Family NYMPHALIDiE. 



Subfamily ITHOMIINE. 



Genus Melin^a. 



1. Melinxa mncme, Linn. 



2. Melinma crameri, God. and Salv, 



3. Meliriiea egina, Cram. 



4. Melinma mnasias, Hew. 



Genus Mechanitis. 

 1 Mechanitis pannifcra, Butl. 

 2. Mechanitis polymnia, Linn. 



Genus Ceratinia. 



1. Oeratinia philidas, God. and Salv. 



2. Ceratinia euclea,* Godt. 



Subfamily EELICONIN.'E. 



Genus Heliconius. 



1. Heliconius numata, Cram. 



2. Heliconius vetustus, Butl. 



3. Heliconius silvana, Cram. 



4. Heliconius eucoma,f Hiib. 



Genus Eueides. 



1. Eueides nigrofulva, Kaye. 



2. Eueides isabella, Cram. 



3. Eueides vibilia, Godt. 



Subfamily NYMPHALINjE. 



Genus Eresia. 



1. Eresia cunice.X 



* The more transparent Ceratinia species, C. harii and C. vallonia, 

 do not strictly belong to this association. 



f 1 ab. of H. numata. J Accidentally omitted from text. 



