GEMELLARIA LORICATA. 19 



Zoarium forming large densely bushy masses, several 

 inches in width, of a brown colour, made up of 

 numerous long, slender, tapering shoots *, irregularly 

 branched ; branches divided dichotomously. Zocecia 

 elongate, more or less attenuated and produced below ; 

 surface minutely pitted; aperture suboval, narrowed 

 towards the bottom, slanting upwards, occupying about 

 half the front, with a thin, raised, and unarmed 

 margin. 



Polypide with from 10 to 14 tentaclesf. 



Height several inches, occasionally as many as 8 or 9, 

 according to Mr. Hassall ; more usually 2-4. 



Habitat. From the littoral region to deep water (80 

 fathoms) . 



Localities. Isle of Sheppey, abundant (Ellis and 

 Farre) : Shetland, occasionally met with ; the Minch 

 (A. M. N.) : Kirkcudbrightshire (Landsb.) : very splen- 

 did on the west coast of Sutherland (C. W. P.) : St. 

 Andrews, abundant in deep water (Dr. Mcintosh) : Bass 

 Rock, 24 fms.; entrance to the Firth of Forth, 22 fms. 

 (Kirchenpauer) : Northumberland, very abundant in the 

 Coralline region (Alder) : Dublin and Killiney Bays, 

 common (Hassall) : north and east coasts of Ireland, 

 common and of large size (W. T.) : South Devon, not 

 common ; Lancashire coast, Lytham &c., in the greatest 

 plenty; Ilfracombe, off the Capstone, 8-10 fms.; Llan- 

 dudno, N. W.; Filey, Yorkshire; Oban, common (T. H.) : 

 Polperro, near the shore, rare (Couch) : Guernsey, after 

 storms (R. S. Cooper). 



Geographical Distribution. Scandinavia ; Spitzber- 

 gen, 3-10 fms. (Smitt) : Greenland (Liitken): Hammerfsest, 

 rare, on Eudendrium ramosum ; Havosund, frequently on 



* " Growing much like a poplar tree." — Couch. 



t Farre and Van Beneden give 10 as the number, Dalyell 12-14, Sars 12. 



c 2 



