DIPTE.IA. 
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3 
yiduals are so exceedingly numerous, the genera are 
few ; Mr. F. Walker enumerating only five. 
Some of the Phlebotomidce are allied to the preceding 
family, and are blood-suckers, while others are harmless. 
The extremely common little insects so often seen on 
window panes with broad sloping wings is one of this 
Daddy-Long-Legs (Tipula olercicea.) 
family. Its wings are thickly covered with hairs, and 
it is not unlike a small moth. Its name is Psychocla 
pJialoenoides; the larva inhabits dry cow dung and 
decayed vegetable matter. It is often popularly, though 
erroneously, called a midge. 
The Tipulidco are distinguished at once by their very 
