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P. S. Juft when the two plates XIX and XX of 
the Pennatula were finifhed, and fent to the 
Printer, I received three kinds of Sea-Pens, 
finely preferved in fpirits, from my learned friend 
Thomas Pennant Efq; of Bychton in Flintfhire, 
which he informs me were fent him from the 
Mediterranean-Sea. One of them is Entirely 
new to me, and, I believe, not yet defcribed ; 
the other two, which are the Red and the Gray 
Sea-Pens of Dr. Bohadfch, are fo very indiffe- 
rently defigned by the Do&or’s painter, and 
which I have copied in Plate XX, that I thought 
a better drawing would give you a clearer idea 
of thefe ftrange animals, and be more agreeable 
to the Royal Society in general. 
An Explanation of the Plates. 
Plate XIX. 
FIG. i. The back part of the Red-Sea-Pen, or 
Pennatula Phofphorea of Linnaeus. This was 
found on the coaft of France, they are fre- 
quently met with on the coafts of Norway and 
* Sweden. 
2. The front of the fame. 
3. and 4. Both fides of the fame magnified. 
5. One of the fins more highly magnified, to fhew 
the Polype-like fuckers by which it takes in its 
nourifhment. 
6. The kidney-fhap’d purple Sea-Pen from South- 
Carolina in its natural fizej this upper part is full 
Kkk 
of 
