326 L. E. CRAWSHAY. 



CAMPANULINIDAE. 

 Opercularella lacerata (Johnston). 



At Positions 4, 10, 11, 13, 14, 32, 40, 62, 64, vii. 



Depth, 40-49 fath. or over. 



On Hydroids and Cellar ia. The species is probably of commoner 

 occurrence over the area than these records show. Growth in most 

 cases simple, with single polyps arising from a stolon. Branching 

 specimens occurred at Positions 13, 14, and 32. One specimen with 

 gonangium at Position 32. 



LAFOEIDAE. 

 Lafoea dumosa (Fleming). 



In varying-sized colonies, creeping or branched, at nearly every 



position, including the last, 80. 

 Depth, 40-52 fath. 



Lafoea fruticosa, M. Sars. 



At Positions 1, 11, 12, 31, 32, 36, 45, 49, 58, 60, 62 ; occurring mostly 



in very small colonies. 

 Depth, 40-50 fath. 



Calycella fastigiata (Alder). 



Only observed at Positions 36 and 40, on Porella and Cellaria. 

 Depth, 43-44 fath. 



Cuspidella costata, Hincks. 



At Positions 3, 49, 59, vii ; growing on Cellaria. 

 Depth, 40-49 fath. or over. 



HALECIIDAE. 



Halecium beani (Johnston). 



At Positions 4, 35, 38, 43. Very small colonies, excepting a large 



specimen at Position 35, on which gonangia were borne. 

 Depth, 40-45 fath. 



Halecium halecinum (Linnaeus). 



At Positions 1, 3, 10, 12, 33, 51, 53, 56. 



Nowhere obtained in large quantities, and usually occurring as quite 

 small colonies. 



Depth, 40-49 fath. 



