TUBULIPORA. 278 
(Laminaria saccharina) dredged in Lamlash Bay. It was 
long known to us under the name of 7. orbiculus. 
** Base elongated or incrassated. 
3. TUBULIPORA PENICILLATA, R. Q. Couch. 
Hab. On shells and stones from deep water, common; 
from the Hddystone Lighthouse to the Deadman Point, 
R. Q. Couch. 
Mr. Couch describes it as calcareous, and about a quarter 
of an inch in height. The upper part is expanded into a 
flat head, having on its superior surface one or two rows 
of projecting tubes round the circumference; the centre is 
either plain or marked with a few irregular cells. The cells 
are distant from each other, with slightly oblique unarmed 
apertures. The under surface of the head is furrowed, 
without cells, and sloped into the footstalk.” (See Dr. 
Johnston’s plate xlviu. fig. 1, 2.) 
4. TUBULIPORA TRUNCATA, Jameson. ‘ 
Hab. Shetland Islands, Jameson; in deep water, Zet- 
land, Dr. Flemmg; Zetland, Prof. E. Forbes; Rev. T. 
Hincks, Salcombe, on shells. 
The head is stellate; the top is convex, orbiculated, fur- 
rowed with shallow grooves, which run towards the flattish 
summit. It has been compared to a little Zehinus without 
z 
