( ?88 ) 
of its Abode. 3, and laftly, The Mechanifin of its 
Reft and Motion. 
Its Shape, which was a Novelty to me, and which 
I fufpeded no one had yet obferved, came very near 
that of a Leach‘s it had all the Motions of that Ani- 
mal, together with fome of its own. The Figure A' 
reprefents this InfeQ; in its natural Bignefs, and accord- 
ing to its moft conftant Dimenfions^ wherefore I fhall 
not ftay to make fo particular a Detail of them. I 
fliall content my felf with obferving in general, that its 
Body is round throughout its whole Length almoft, 
but a little flatted towards it Belly B 5, fo that its Cir- 
cumference, taken according to its Thicknefs, is almoft 
elliptick. It is adorned all along with little circular 
Furrows parallel to each other, and very clofe toge- 
ther, but fo fine, that one can fcarce perceive them 
without a Microfcope. It is of a greyifti Colour, and 
its Body is a little tranfparent. One fees on its Back, 
as well as underneath, two black Lines, which begin 
by an acute* Angle towards the Neck, and running 
through the whole Length of the Body, feem to be 
terminated towards the jinus, Thefe Lines are not 
upon the Skin, as ‘ one might imagine at firft Sight, 
without fufficient Attention they are Tubes, or Bow- 
els, which ferve for Nutrition or Chylification, which 
appear through the Integuments. 1 (hall divide the 
Length of this little into two Parts, diftinguifti- 
ed by the Center of a little Protuberance C, which is 
under its Belly, and is a mufcular Body, in Form of a 
fpherical Bladder. Thefe two Parts of the Body are in 
the Proportion of Four to Three. I (hall call them the 
fore Part and th e hind Part. This Diftindion is ne- 
I ceffary 
