HYDROIDS FROM VANCOUVER ISLAND 155 



Thuiaria fabricii (Levinsen). — (p. 76). Rare, found only 

 in Northumberland strait. 



Thuiaria similis (Clark). — (p. 77). Commonly dredged 

 in Departure bay and Northumberland strait in 10-25 fathoms, 

 but not so common here as in the San Juan archipelago. 



Thuiaria thuja (Linnaeus). — (p. 78). Two specimens were 

 obtained in material from Banks island. 



Aglaophenia struthionides (Murray). — (p. 80). Very 

 common around the south end of the island from Victoria to 

 Ucluelet but not observed north of Victoria on the east side of 

 the island. The large clusters of long symmetrical plumes 

 make this species one of the most conspicuous as well as the 

 most beautiful of the hydroid forms in this region. 



Plumularia goodei Nutting. — (p. 82). A few specimens of 

 this delicate little plumularian were found near low water at 

 Port Renfrew. 



Plumularia lagenifera Allman. — (p. 82). This is the 

 commonest plumularian in the region, While Aglaophenia 

 struthionides seems to have reached its northern limit near the 

 southern end of the island, Plumularia lagenifera extends much 

 farther north. Specimens were obtained by Mr. Taylor at 

 Hope island and many specimens were obtained from De- 

 parture bay and Northumberland strait. Much the finest 

 specimens were obtained from Ucluelet. 



Plumularia palmeri Nutting. — (p. 84). A few specimen* 

 were obtained at Ucluelet. 



