Nomenclature
basis of record
Bagnall, R.S. (1915) Report on the field meetings of the Natural History Society for 1911. Trans.Nat.Hist.Soc.Northumberland, Durham & Newcastle upon Tyne (NS) 4(1):344-365 [details]
Other
From editor or global species database
Ecology Described by Bagnall from sea banks at Hart, near Blackhall Rocks, northern England. Apparently not exclusively littoral [details]
Taxonomy The taxonomic staus of S. horrida I am unclear of. Certainly Edwards, on the basis of material in the Natural History Museum London concludes it is S. vulgaris but he gives Silvestri as the authority not Hansen. [details]