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.9 . 4IIPPOBOSCA. PIIPPOBOSCA. 
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Generic Character, 
Os rostro bivalvi, cylin- 
drico, obtuso, nutante. 
Corpus depressum. 
Pedes unguibus pluribus. 
Mouth furnished with a bi- 
valve, cylindric, obtuse, 
nutaiit snout. 
Body depressed. 
Feet furnished with several 
claws. 
T^HE genus Hippobosca is remarkable for many 
singularities. It is not an extensive genus; the 
European Hippoboseae, so far as our present en- 
tomological information reaches, scarcely afl'orcling 
more than five or six distinct species. Of these 
the most familiar is the Hippobosca equina, or 
PIorse-Fly, so troublesome to those animals, as 
well as to cattle, during the decline of summer, 
by its irritating motion, (which is performed in 
various directions with equal facility) and by the 
pungent pain which its proboscis excites while in 
the act of suction. In size it varies in different 
districts, and seems to be largest in the southern 
climates. It usually however measures something 
more than a quarter of an inch in length, and is 
V. VI. p. II. 2(3 
