Hydroids 5 1 



Cuspidella grandis Hincks.— Richmond gulf, 15-20 fathoms; Station 436, Dol- 

 phin and Union strait, N.W.T., 50-60 metres, September 14, 1915. 

 Opercularella lacerata (Johnston). — Richmond gulf, 15-20 fathoms. 



Family HALECIDAE 



Halecium beani (Johnston). — -King George's sound, south side of Hudson 

 strait, 40 fathoms, "Diana" Expedition, September, 1897. 



Halecium labrosum, Alder. — Richmond gulf, 15-20 fathoms. 



Halecium muricatum (Ellis and Solander). — Richmond gulf, 15-20 fathoms, 



Halecium tenellum, Hincks.— King George sound, south side of Hudson strait, 

 40 fathoms; Port Burwell, Ungava; Richmond gulf, 15-20 fathoms. 



Family LAFOEIDAE 



Filellum serpens (Hassell). — Richmond gulf, 15-20 fathoms. 

 Lafoea dumosa (Fleming). — Richmond gulf, 15-20 fathoms. 

 Lafcea fruticosa Sars. — Richmond gulf, 15-20 fathoms. 

 Lafcea gracillima (Alder). — Richmond gulf, 15-20 fathoms. 



Family SERTULARIDAE 



Abietinaria greenei (Murray). — Station 14, Bering sea, near Unimak, Alaska, 



July 2, 1913. Surface. 

 Abietinaria turgida (Clark). — Between Blackwhale and Olaska harbours, east 



coast of Hudson bay, 10 fathoms; Richmond gulf, 15-20 fathoms; Station 



19 a-e, off Norton sound, Alaska, July 8, 1913, surface; Station 14, Bering 



sea, near Unimak island, Alaska. 

 Diphasia pulchra Nutting. — -Bay on east side of Grey Goose island (lat. 54° 



N.), east side of James bay, 10 fathoms. 

 Selaginopsis alternitheca (Levinsen). — Station 27s, Collinson point, Alaska, 3 



fathoms, October 3, 1913. 

 Sertularella fusiformis (Hincks). — King Gebrge sound, south side of Hudson 



strait, 40 fathoms. 

 Sertularella polyzonias (Linn.). — King George sound, south side of Hudson 



strait, 40 fathoms; Richmond gulf, 15-20 fathoms. 

 Sertularella tricuspidata (Alder). — Station 22, near Icy cape, Alaska, 11-12 



fathoms, August 17, 1913, Richmond gulf, 15-20 fathoms. 

 Thuiaria similis (Clark). — Station 22, near Icy cape, Alaska, 11-12 fathoms; 



Richmond gulf; 15-20 fathoms. 



Department of Zoology, 

 Univebsity of Beitish Columbia, 



Vancotjvee. 



Note: — For synonymy and bibliography see previous papers, especially, 



The Hydroids of the west coast of North America: Bulletin from the Laboratories of Natural History, 

 State University of Iowa, 1911, pp. 1-91. 



Some hydroids of the Vancouver island region: Transactions of the Hoyal Society of Canada, Ser. 3, 

 vol. viii, Sec. iv, 1914, pp. 99-216. 



Hydroids of eastern Canada: Contributions to Canadian Biology, 1918, pp. 329-366. 



