314 HISTORY OF BRITISH ZOOPHYTES. 
on the coast of Ayrshire, of Arran, and of Cumbraes. It 
has been found on shells of Lime dredged off Sana Island, 
Mr. Hyndman. 
When I sent this many years ago to Dr. Johnston, I 
was considerably gratified by learning from him that it was 
new to Britain, and corresponded with the description 
given of Cellipora annulata, by Otho Fabricius, in his 
‘Fauna Greenlandica.’ In Greenland it would appear that 
the cells are generally found in a solitary state. We have 
not found them so, but we have often seen only four or five 
together; more commonly, however, they are in a round 
patch of about a dozen. It is a very pretty species. Otho 
Fabricius says, “ pulcherrima et perfectissima hec omnium 
visorum.” Hach cell is like a little barrel closely hooped, 
and having transverse rows of perforations betwixt the 
hoops. There is often a medial line from the top to the 
bottom of the cell. The aperture gapes, and has a stout 
rim like an upper and under lip. In many specimens there 
is a tusk on each side of the mouth, turned up and termi- 
nating with a knob; and occasionally there is one, some- 
times there are two, smaller teeth on the lower lip. The 
colour in general is a pale brownish-red. It is at times 
found in the inside of old shells. 
