THE ENTOMOLOGIST’S 
WEEKLY INTELLIGENCER. 
No. 192.] SATURDAY, JUNE 9, 1860 [Price Id. 
MICRO LARViE. 
A coN'VEXiEXT cage wherein to keep 
the larvse of Gelechice or Depressarice 
may reatiily be formed by simply 
covering a common while jam-pot with 
a piece of glass. The glazed surface 
of the pot keeps in all the moisture 
and keeps the food fresh, and the 
glass top to it enables the collector 
to see readily what is going on in the 
cage, without being at the trouble of 
opening it. To ensure a tight fit it 
is as well to grind the tops of the 
jam-pots, so that the glass may rest 
on a perfectly level surface. Some 
sand placed at the bottom of the jam- 
pot will be found convenient for those 
larvae which have a partiality for pene- 
trating the surface of the earth. 
These jam-pots will also be found 
to answer very well for all those 
mining larvae which, like Gelechia cos- 
tella and Acrolepia pygmceana, move 
from leaf to leaf. 
Larvae of any of the genus Lilho- 
colletis are best reared by keeping the 
leaves in tins till the larvae have 
entered the pupa state. After which 
important change in their condition 
the mined place can be cut out from 
the rest of the leaf, and placed in a 
jam-pot or glass tube, as most con- 
venient. Chimney-glasses, corked at 
each end, answer very well for con- 
taining a number of such pupae. 
The case-making larvae of the genus 
Coleophora require a treatment totally 
different from that which is found to 
answer for other Micro larvae. They 
must have air. A close vessel, whether 
of tin or glass, is to a Coleophora 
larva what the Black Hole at Cal- 
cutta was to the English prisoners 
confined there. The larvae will be 
seen crawling away from their food 
to the top of their cage, trying every 
crevice to find a means of escape, and 
in their agony they frequently divest 
themselves of their cases in their 
frantic efforts to respire more freely. 
Truly a number of these larvae in 
a close shut-up vessel is a piteous 
sight ! 
Hence for these larvae an airy cage, 
such as we should use for Macro 
larvae, will be found most suitable. 
If their food be placed in a flower- 
pot, and kept as nearly as possible in 
T, 
