[43i ] 
8. The Sea-Pen called by the Italian Filhermen 
Penna del pefche Pavone , or the Pen of Peacock 
Fifh ; this appears to be broken off, and is def- 
cribed to be yet 2 feet ten inches long, the fquare 
bony part of this is not fo hard as that in the 
Red-Sea-Pen. 
9. This lafl of Dr. Bohadfch’s four Sea-Pens is 
the Alcyonium called by authors Manus marina , 
or vulgarly Dead-man’s Hand : he calls it Pen- 
na Exos and the branched Sea-Pen without fins 
having fuckers placed on its branches : but it 
by no means belongs to this clafs of animals, 
which float freely about in the fea ; whereas 
this adheres to Rocks, Shells, or other marine 
fubftances. I have introduced our Alcyonium 
Manus marina or Dead-man’s Hand, which is 
found in great plenty all round the coafts of 
the Britifh Iflands, to fhew its internal ftrudture, 
and how near it comes to the Madrepora Coral, 
which appears by itgrowth and form to be produced 
by animals of the fame fhape. 
10. A piece of the Alcyonium Manus marina , 
cut perpendiculary through the middle, to fhew 
that it is formed of tubes, which branch out 
into others, each ending on the furface in a ftarry 
opening of 8 rays ; in each of thefe openings is 
a polype-like figure or fucker with eight claws, 
faflened to the infide of the tube at it’s lower 
part by 8 fine tender filaments, by which it can 
raife or fink itfelf at pleafure in its tube : all thefe 
tubes that compofe this Alcyonium are connected 
together by minute reticulated fibres ; thefe in- 
clofe a kind of ftiff gelatinous fubftance, which 
teems 
