STOMATOPORA COMPACTA. 435 



Geographical Distribution. Gulf of St. Lawrence 

 (Dawson) : off Hare Island^ Waigat Strait_, entrance of 

 Baffin's Bay, 1 75 fathoms {' Valorous ' dredgings) . 



Stomatopora COMPACTA, Norman. 

 Plate LXIII. figs. 1, 2. 



Alecto COMPACTA, Norman, Hebridean Polyz., Rep. Brit. Assoc, for 1866 

 (1867), 204. 



Zoarium narrow at the base, rapidly widening above 

 and ramifying irregularly, remarkably flattish and 

 closely appressed, minutely punctate; branches wide 

 and short, their extremities rounded. Zocecia very small 

 and slender, irregularly scattered and separated from 

 each other, shortly tubular, the oral extremities scarcely 

 raised above the surface, all inclining towards the top 

 of the branches, but slightly bent towards the side. 

 Ocecia (?). 



In this species the primary stem often divides into two or 

 three short and wide branches, which again divide and 

 terminate in rounded segments. The zoarium is closely 

 adnate and depressed, and always white in colour; the 

 cells are small, and the whole habit delicate. This 

 species, like the last, bears some resemblance to a Diasto- 

 pora. 



Habitat. On stone and shell from deep water. 



Localities. Hebrides, the Minch ; Shetland (A. M. N.) . 



2f2 



