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V. A Letter from the Rev* Mr. Littleton 
Brown, F. R. S. to C. Mortimer, M. D. R. S. 
Seer . concerning the fame fort of Ink £t found 
in Kent, fome of which he prefented to the 
Royal Society y to he keppintheir Mufeum. 
With an Addition by the Rublifher. 
s i k 5 
I Have fent a Creature to you, whofe Name I can- 
not learn from any Books or Perfons I have yet met 
with. I brought it from a Pond upon Bexby Common 
laft Saturday y where great Numbers hav.e been ob- 
served for thefe five W eeks paft : The Pond was quite 
dry the 24th of June y but upon its being filled with 
the great Thunder-Shower upon the 2yth, within two 
Days the Pond was 6bferved to fwarm with them, by 
a Farmer watering his Cows there: And, what I 
thought obfervable, there is. no Duft or Channel 
that could convey them from any adjacent Place. I 
beg the Favour of its Name, or where I may fee its 
Defcription. I am Tour very obliged Friend 
9 ‘ and humble Servant, 
Littleton Brown. 
Fig. II. E. 
The Legs of this Infeft are very extraordinary ; I counted 42 on a Side 
in one of thofe found in Kent ; the 20 next the Head are nearly of a Size, 
but then they grow gradually fmaller and fmaller towards the Tail. I took 
out one of the larger ones of the LeftSide of the Chelt ; the Foot cenfifts pf 
five flat membranous Claws, with a ftiff Rib along their Middle, an.d be- 
fet with Hairs on the Edges, like thofe of Crabs ; on the lower Side of the 
Leg hangs an oval Bag, and beyond that grows a large thin Membrane, 
which can be extended by a bony Rib that runs crofs it ; this Membrane 
and the whole Foot, is convex on the Side next the Head, and concave on 
that next the Tail ; the Thigh or firft Joint of the Leg, is webbed on each 
Side ; fo that the whole Strufture of the Legs feems to fhew that they are 
rather deiign’d for fwimming with, than walking. The Leg reprefented 
at E, was drawn, when the Infeft lay on its Back, as at B. Many Parts 
of this In left, tho’ no bigger than the Figures, have fome Refemblance to 
thofe of the Molucca Crab. C. M. 
Us VI. An 
