ANNELIDA. 131 



Genus Amphicora, Ehrenberg. 



Amphicora Fabricia, 0. F. Miiller; Mgrn. op. cit. p. 117. 



Abundant under stones on muddy ground between tide- 

 marks and amongst tangle-roots. 



Fam. 36. Serpulidae. 



Genus Protula, Risso. 



Protula tubularia, Mont. (=protensa, Johnst.) ; Johnst. Cat. 

 Brit. Mus. p. 264. 



Occasionally in deep water. 



Genus Filigrana, Oken. 

 Filigrana implexa, Berkeley ; Mgrn. op. cit. p. 119. 

 Fine masses are common in the coralline region. 



Genus Hydroides, Gunner. 

 Hydroides norvegica, Gunner ; Mgrn. op. cit. p. 120. 

 Abundant in deep water, attached to shells, stones, &c. 



Genus Serptjla, L. 

 Serpula vermicularis, L.; Mgrn. op. cit. p. 120. 

 Common in deep water. 



Genus Pomatocerus, Phil. 

 Pomatocerus triqueter, L. ; Mgrn. op. cit. p. 121. 

 Very common from the littoral to the coralline region. 



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