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« the antennae of the females) which the inledt 
<< moves every way very brifkly. Thefe antennae are 
“ all jointed, and from every joint there come out 
“ four ffiort Setae, placed two on each fide. 
“ It has three jointed legs on each fide, and moves 
“ very brifkly and with great fpeed. From the extre- 
“ mity of the tail, there arife two long Setae or hairs, 
“ four or five times the length of the infedt They 
<< diverge as they lengthen, are very flender and of 
tc a pure fnow. white colour. It has two wings 
“ which take their rife from the back part of the 
“ flioulders or thorax and lie down horizontally like 
“ the wings of the common, fly, when the infedt is- 
“ walking : they are oblong, rounded at the extic— 
“ mity, and become Suddenly fmall near the point 
“ of infertion : they are much longer than the body 
“ and have two long nerves, one runs from the ba- 
“ fis of the wing along the external margin and 
“ arches to meet a flender one that runs along the 
“ underd an inner edge : they are quite tnin, flender 
“ tranfparent, and of a lnowey whitenefs. The bo- 
« dy of the male is of a lighter red than the body 
“ of the female, and not near fo large.” 
To this description of Dr. Gardens, which agrees 
very nearly with the annexed microfcopical drawings of 
both lexes of this infedt, A and C. Tab. XXI. I mult 
add that the female has a remarkable probofcis or awl 
Shaped papilla, that arifes in the midft of the breaft. 
This Linnaeus calls the Roftrum, and thinks it the 
mouth ; if fo, befides the office of fupplying it with 
nourishment during the time of its moving^ about, 
it is the tube though which the fine double filament 
proceeds, with which it forms its delicate white 
* ' webb 
