SCRUPOCELLARIA. 343 
The inferior end of the cell as seen behind much contracted ; 
the mouth regularly oval, and surrounded with a somewhat 
thickened margin, beset with minute verrucosities. There 
is a row of from three to five small openings towards the 
outer border of the cell on the back, and the upper and 
outer angle in front supports a minute upright spine, which 
is, however, not unfrequently wholly wanting. There are 
no moveable appendages. The ovarian cells are rounded 
and affixed above the cell to which they belong, and imme- 
diately behind the upper margin of the mouth, which in 
that case is slightly depressed. The external surface is 
marked by lines crossing each other obliquely, and giving 
it a tessellated aspect. The mouth of the cell is filled up 
by a delicate transparent membrane, in the upper part of 
which is situated the crescentic orifice, protected below by 
a projecting, and probably moveable labium, as in others of 
this class.” (Bush.) 
Genus SCRUPOCELLARIA. 
1. ScRUPOCELLARIA SCRUPEA, Bush. 
Hab. Dredged near Dartmouth by Prof. EH. Forbes, and 
by Mr. M‘Andrew in the Mediterranean. 
