DIPTERA. 
C.5 
gloomy habitation by means of his wings, which otten 
are variegated , and takes his paflime in tue fields. 
Its long legs and its wings mutually aifnt eacii 
other when it either walks or flies. 
The larvae and chryfalids of the little tipulae are 
found in water ; they are various in colour, form, 
and carriage ; fome, like the polypus, furnifiied with 
a pair of arms ; feveral with cylindrical tubes that 
perform the office of vent-holes. Thefe fwim with 
nimblenefs ; thofe never leave the holes they have dug 
themfelves in the banks of rivulets. Laflly, others 
make a filken cod that receives part of their body: 
all receive wings. 
Their frame is then fo weak, that a touch is enough 
to crufh them. 
In the ftate of larva they were a prey to fifhes— 
in their progrefs through the air they are equally 
a prey to birds. 
One fpecies has its forelegs extraordinarily long, 
but they do not touch the ground, but are moveable 
like antennae. 
Tipula Croccita . 
The larva is long, yellowifh, with 14 rings and has 
6 little feet. It is found in the flumps of decayed trees, 
amongfl the kind of tan formed in thofe flumps. The 
chryfalis is the colour of bark, and of a peculiar fhape. 
Each 
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