Polyzoa of Queen Charlotte Islands. 33 



Crista denticulata^ Lamarck. 



Houston-Stewart Channel. 



[Kara Sea, Norway, Spitzbergen, Grand Manan, Britain, 

 Adriatic, Madeira, South Africa.] 



Family Tubuliporidae. 



Stomatopoea, Bronn. 



Stomatopora major , Johnston. 



On shell, rare. 



[Bergen, Britain, Brittany.] 



Stomatopora diastoporides^ Norman. 



On shell. 



[Entrance of Baffin's Bay, Gulf of St. Lawrence, Britain.] 



Stomatopora ma^assata, Smitt. 



A specimen occurs exhibiting the anastomosing habit 

 which is characteristic of British examples of this species. 

 Cumshewa ; Houston-Stewart Channel. 

 [Spitzbergen, Nova Zembla, Kara Sea, Britain.] 



TUBULIPORA, Lamarck. 



Tubulipora lohulata, Hassall. 



Houston-Stewart Channel, on shell. 

 [Scandinavian coasts, Britain.] 



Tuhidipora perfragilisy n. sp. 



Zoarium adnate, white, and composed of very delicate ma- 

 terial, consisting of a short stem, widening upwards, which 

 divides dichotomously into two principal branches, these again 

 subdividing dichotomously, the lower segments curving down- 

 wards so as almost to surround the point of origin and the 

 stem, and giving to the whole colony a flabellate form ; 

 branches slender at the base, expanding upwards, thickly 

 covered with the cells, occasionally a second expansion origi- 

 nating from the summit of the first, to which it is connected 

 by a narrow base. Zocecia crowded on the branches, radi- 

 ately disposed, very slender, with a speckled surface, a large 

 portion of the length free and subhorizontal, sometimes con- 



