group of Butterflies, Potaro District, British Guiana. 418 
noted that the Lycanids 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 
croup 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 NYMPHALID. 
Subfamily J7HOMIIN 44. 
Genus MELINA. 
. Melinea mneme, Linn. 
. Melinxa crameri, God. and Salv. 
. Melinea egina, Cram. 
. Melinxa mnasias, Hew. 
Genus MECHANITIS. 
Mechanitis pannifera, Butl. 
. Mechanitis polymnia, Linn. 
Genus CERATINIA. 
1. Ceratinia philidas, God. and Salv. 
2. Ceratinia euclea,* Godt. 
Subfamily HELICONIN 4, 
Genus HELICONIUS. 
. Heliconius numata, Cram. 
. Heliconius vetustus, Buthl. 
. Heliconius silvana, Cram. 
. Heliconius eucoma,+ Hiib. 
Genus EUEIDES. 
. Eueides nigrofulva, Kaye. 
. Hueides isabella, Cram. 
. Hueides vibilia, Godt. 
Subfamily NYMPHALINA. 
Genus ERESIA. 
Od bo 
Ne 
Hm OF bo eS 
Co be 
1. Eresia eunrce.t 
* The more transparent Ceratinia species, C. barii and C. vallonia, 
do not strictly belong to this association. 
7 ? ab. of H. numata. t Accidentally omitted from text. 
