116 CATALOGUE OF THE ZOOPHYTES OF 



laying hold of neighbouring corallines or other substances for 

 support, 



12. S. OPERCULATA, Linn. 



Johns. Brit. Zooph., 77, t. xiv., f. 2, 2.* 

 On Laminarice and other sea-weeds, at and beyond low-water 

 mark; common. 

 I have got this species alive at low -water mark at Bambo- 

 rough, but have not succeeded in doing so at Tynemouth and 

 Cullercoats, though it is common there on the stalks of Lami- 

 naria digitata thrown up by the tide. It appears to live usually 

 beyond low -water mark. 



13. S. ARGENTEA, ElUs and Solander. 



Johns. Brit. Zooph., 79, t. xiv., f. 3, 3,* and t. xv. 

 Beyond low -water mark, mostly in the Laminarian zone ; not 

 uncommon. " Exceedingly abundant on the south coast 

 of Durham." — J. Hogg, Esq. "Among sea-refuse; not 

 uncommon." Berwick Bay. — Dr. Johnston. Less com- 

 mon at Cullercoats, but the young or a small variety is 

 often found growing on the shells of Fusus antiquus 

 brought in by the fishing boats. Mr. Coppin finds them 

 to bear ovicapsules in the winter season. 



14. S. cupRESSiNA, Linn. 



Johns. Brit. Zooph., 80, t. xvi. 

 Cullercoats ; rare. — J. Coppin, Esq. Tynemouth. — Miss 

 Forster. Seaton. — J Hogg, Esq. 

 It is difficult to distinguish this species from the last, as the 

 characters seem to run very much into each other. 



*** Cells appressed, sub-four-rowed. (Nigellastrum, Oken.) 



15. S. FUscA, Johns. 



Johns. Brit. Zooph., 70, wood-cuts 6, 11. 

 From deep water; rare. Dunstanborough. — H. Emlletony 

 Esq. Cullercoats, and from the five-men boats. — /. A. 



