BEES, WASPS, ETC., OR HYMENOPTERA. 61 
bodies of fresh water. The lace-winged flies are also found 
in the vicinity of water. The larve of almost all of these 
insects are aquatic. They emerge from the water perfect 
insects. The larvee should be preserved in alcohol. The 
perfect insects are killed with oxalic acid, and for trans- 
portation are packed in paper like the butterflies. When 
they are to be mounted, a copper wire is placed through 
the body and head; the wings are then spread, as before 
described. 
Bees, Wasps, etc., or Hymenoptera. — Members of this 
order may be found everywhere in the fields and woods, 
Their larve generally resemble grubs, or maggots, and 
should be preserved in alcohol or glycerine. 
The larvee of the Ichneumon-Fly are found in the bodies 
of caterpillars. The larvee of other species are found in 
the excrescences on various plants and trees. This class 
of insects may be caught in a net and placed in alcohol, or 
killed with oxalic acid. They are to be mounted as the 
other winged insects; the tongue must be brought forward 
so that it can be examined when the insect is dry. 
The nests of the Wood-boring Bees, the Paper-making 
Wasps, and Hornets, the mud nests of the Mason Wasps, 
the excrescences on trees and plants, should all be col- 
lected and preserved dry after the larvee has been taken 
out. Ants with their eggs and larvee may be put into 
alcohol ; it is best to capture these fierce little insects with 
the tweezers, to avoid their stings, which are sometimes 
poisonous. 
Flies, Mosquitoes, etc., or Diptera. — These are the most 
difficult of all insects to preserve, especially when they 
have to be transported from a distance, as they must all 
be instantly pinned, with the exception of the Fleas, which 
may be put into alcohol. 
They may be caught everywhere by beating bushes by 
the side of the roads and woods, then using the net. 
