276 PROCEEDINGS OF THE ACADEMY OF [May, 



Amphitrite cirrata Miiller. 



Barden Bay, O. 45, 10-40 fath. A few tube* of au Amphxtrite 

 were also dredged al Foulke Fjord, O. 12, 8o fath. 



Nicolea arctioa Malmg. 



Very abundantly represented iu the collections from Northum- 

 berland Island. Melville Bay, O. 6 ; Northumberland Island, O. 

 11, 10-15 fath. 



Scione lobata Malmg. 



Granville Bay, O. 39, 30-40 fath. ; Barden Bay, 0. 45, 10-40 

 fath. 

 Axionice flexuosa (Grube) Malmg. 



Saunders Island, O. 9, 5-10 fath. ; Granville Bay, 0. 39, 30-40 

 fath. 

 Thelepus circinnatus (Fabr.) Malm.i,'. 



Next to Harmotho'e imbricata, this species occurs most frequently 

 in the collections of Dr. Ortmaun. It is not represented in the 

 material from McCormick Bay. 



Godhavn, Dr. Hayes ; Godhavn Harbor, O. 2, 8 fath. ; off Gape 

 Chalon, O. 27, 35 fath.; Foulke Fjord, O. 32, 14 fath.; Gran- 

 ville Bay, O. 39, 30-40 fath.; Olridir Bay, O. 49, 15-20 fath., 

 Robertson Bay, O. 51, 35-40 fath. ; Kaniah, O. 50, 30-40 fath. 



Chone infundibuliformis Kroyer. 

 Olridir Bay, O. 29, 7-25 fath. 



Serpula sp. 



Tubes of a small Serpula were found attached to the tubes of 

 Northia conchylega from Olridir Bay and other places, 



Spirorbis granulatus (Linn.) MGrch. 



Found only attached to the tubes of Northia conchylega and 

 Thelejnis circinnatus, and especially abundant on the former in 

 Olridir Bay. A number of examples were noticed iu which the 

 last turn of the tube was elevated and free. The thick tube is 

 sometimes marked with one, sometimes with tv,o, longitudinal angu- 

 lar ridges; these become quite evident in young individuals of 

 .5 mm. diameter. 



Foulke Fjord, O. 32, 14 fath. ; Granville Bay, O. 39, 30-40 

 fath. ; Olridir Bay, O. 49, 15-20 fath. 



