254 Rev. T. Hincks's Catalogue of Zoophytes 



9. S. Margareta, Hassall. 



Devonshire {Mrs. Griffiths). 



I have never obtained this species myself. It must be rare, 

 or it would have turned up amongst the large quantities of 

 trawl-refuse which I have examined from time to time. Are not 

 S. pinaster and S. Margareta different sexes of one and the same 

 species ? 



In the case of S. tamarisca, the researches of Prof. Allman 

 have shown that the male and female capsules are dissimilar*. 



10. -S. nigra, Pallas. 



Not uncommon at certain points off the Devon and Cornish 

 coasts, in deep water. From Mr. Laughrin of Polperro I have 

 received many fine specimens (one from 40 fathoms, ten or twelve 

 miles from shore) either of this or the next species. In the ab- 

 sence of the reproductive capsules, I confess myself quite unable 

 to distinguish the one from the other, and strongly suspect that 

 here, again, the difference in the form of the gonothecaj merely 

 denotes a difference of sex. This point can only be settled by 

 an examination of living specimens; and meanwhile the two 

 names must be retained. 



Off the Deadman, rare; a few miles west and north-west of 

 the Eddystone, common (jR. Q. Couch). 



11. S. pinnata, Pallas. 



I have specimens of the form with spinous capsules, from 

 Torbay or the neighbouring sea. 



Dr. Johnston received a Devonshire example from Mrs. 

 Griffiths. 



12. S. tamarisca, Linn. 



Common in the Coralline zone : abundant amongst the Brix- 

 ham trawl-refuse ; dredged on stone, Torbay. 



13. S. abietina, Linn. 

 Deep water, very common. This species is taken up in im- 

 mense quantity by the trawlers. 



14. £. operculata, Linn. 

 Common, investing the stems of Laminaria ; Brixham trawl, 

 boats occasionally. 



15. S. argentea, Ellis & Solander. 

 Very abundant, Coralline zone : one of the principal elements 

 of the trawl-refuse ; sometimes in large clusters on mussel- 



* Vide paper on the " Reproduction of S. tamarisca," in the Report of 

 British Assoc, for 1858. 



