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Legs rather long (when extended flatly they appear very long), 
of great strength, and tawny yellow in colour, variously ringed, or 
clouded, or otherwise varied, with brown or black. 
Each foot (or tarsus ) is terminated by a pair of claws, each of 
the pair being formed of one large, very strong, much curved, 
black claw, at the outside of which is placed another much shorter 
and thicker, forming a kind of thumb-like appendage to the main 
claw. See figure below. On placing the curved claw in a good 
Foot of Hippobosca equina, showing double claws, central process, and 
long prickly bristle ; also portion of side of claw of H. maculata (also magnified), 
showing parallel grooves and saw-edge. 
light, it can be seen (with the help of magnifying powers) that the 
lower parts of the sides are furrowed by minute grooves placed 
parallel to each other, and that the lowest part of the claw has, 
running beneath it, a regularly serrated, or scalloped, edge, each 
groove running down to a notch in the saw-like edge. This 
structure I have also observed in the Indian Forest Fly ( Hippobosca 
maculata ); see figure above of a portion of a curved claw very 
much magnified. Consequently on this peculiar structure, when 
the fly presses the sides of the curved claws together, they form a 
kind of flat-sided forceps, perfectly adapted for holding fine objects like 
hairs, amongst which the presence of the infestation causes exceeding 
discomfort, or with horses unaccustomed to it quite uncontrollable 
terror. 
Beneath the foot, and between the cushions or pulvilli (see 
figures above, greatly magnified), is a long stout hair, or rather 
bristle, extending fully to the length of the curved claws, and 
bearded with side hairs, and at its base is a minute structure, only 
