Papers Read before the Victoria 
Institute, 1897. 
{Read 31st May, 1897.) 
ON A SMALL COLLECTION OF BUTTERFLIES MADE 
CHIEFLY IN THE TUNAPUNA VALLEY. 
By Florian Lechmere Guppy. 
I exhibit a case of butterflies most of which were collected in 
Tunapuna Valley. Among them is a specimen of Metamorpha 
dido which is stated to be a common tropical American insect ; 
but it is not included in Dr. Crowfoot’s list of Trinidad Butterflies, 
hitherto the most complete. When flying, this insect might be 
taken for Victorina steneles, the Green Page. It flies very high 
overhead and is hard to capture. There are also in the collection 
some specimens of Ageronia and Heliconius. The four kinds of 
Ageronia are very remarkable and I think three of them are 
scarce, but I shall probably get more. In Tunapuna Valley 
Heliconii are very abundant. Another abundant species in that 
Valley is Catagramma codomannus (the eighty-eight.) I have 
found the names of some of those butterflies and I should like to 
identify the others. They were all caught in Tunapuna Valley 
except the Helicopes which I got at Woodbrook, and the large 
dark-colored butterfly near the Nymplialis orion in the case. 
This large butterfly is the only one of its kind I have seen. 
Read 31st May, 1897. 
SUGGESTIONS AS TO SILICEOUS AND CALCAREOUS 
ORGANISMS. 
By R. J. Lechmere Guppy. 
T HE nature and character of organisms secreting and assimil- 
ating Silica and Lime respectively have often been before my 
mind. In the course of the studies and investigations I under- 
took some five or six years ago into the Foraminifera and Radio- 
aria of the cretaceo-tertiary rocks and at various other time, it 
has occurred to me that assimilated Lime is characteristic of 
