Polyzoa of Queen Charlotte Islands. 21 



SCHIZOTHECA, Hilicks. 



Schizotheca Jissurella^ ^ n. sp. (PI. XVII. fig. 7.) 



Zocecia small, quincuncially disposed, ovate, the lower 

 portion flattish, the oral region raised, tubular, suberect ; some- 

 times punctured round the margin, sutures extremely shallow ; 

 surface smooth, porcellaneous, shining; orifice immersed, 

 arched above, straight below, with a narrow slit-like sinus ; 

 (?) two spines on the upper margin ; peristome thickened and 

 elevated round the mouth, so as to form a kind of neck, car- 

 ried out in front into a projection, which is notched in the 

 centre and bimucronate ; on each side a sharp spinous process, 

 often wanting. Ooecium rounded, smooth, with a small longi- 

 tudinal fissure above the opening, and a central tooth-like 

 process just within the oral arch. 



Dolomite Narrows ; Cumshewa, &c. ; not uncommon on 

 shells and stone. 



This is a very characteristic member of the genus ScMzo- 

 theca^ of which only two species have hitherto been recorded — 

 S. Jissa, Busk (Britain and Mediterranean), and S. divisa, 

 Norman (Britain). I have only noticed obscure traces of 

 marginal spines, which constitute a very striking character 

 in the British forms. 



HiPPOTHOA, Lamouroux. 



Hippotlioa expansa, Dawson. 



Common on shells ; Houston Stewart Channel. [Shetland, 

 Gulf of St. Lawrence, Davis Straits.] 



Uippothoa dtstans, MacGillivray. 



Cumshewa ; Houston Stewart Channel. [Britain, Medi- 

 terranean, Singapore, Australia.] 



Myeiozoum, Donati. 

 Myriozoum coarctatum, Sars. 



Cumshewa; Houston Stewart Channel, 15-20 fms. ; abun- 

 dant and fine. [Vancouver Island, Campbell Island (British 

 Columbia), Arctic seas, Norway.] 



* Described as a ScMzoporeUa, ' Annals ' for September 1882, p, 253. 



