644 E. J. ALLEN. 



Torquay. On shells thrown up on the shore at Tor Abbey 

 Sands {Elwes, Joum. M.B.A., voL 9, 1910, p. 66). 



PoMATOCEROS TRIQUETER (Linnseus) : de St. Joseph, Ann. Sci. Nat. 

 Zool. XVII. 1894, p. 353. 



Plymouth. Common, attached to shells and stones on all gromids 

 from the shore to 30 fms. 



Dredged by Crawshay at several positions S.S.W. of the Eddy- 

 stone in depths of 42-51 fms. (Journ. M.B.A., vol. 9, 1912, p. 347). 



Salcombe. Common in dredge material from Salcombe Harbour 

 and the Kingsbridge Estuary (Journ. M.B.A., vol. 6, 1900, p. 199). 



ExMOUTH. Found only at Orcombe Rocks, at the mouth of the 



estuary (Journ. M.B.A., vol. 6, 1902, p. 322). 



Torquay. Extremely common on stones {Ehves, Journ. M.B.A., 



vol. 9, 1910, p. 66). 



Hydroides norvegica Grunnerus : de St. JosepJi, Ann. Sci. Nat. Zool. 

 V. 1898, p. 440. 



Plymouth. Common on stones and shells from the shore to 30 

 fms., increasing in abundance in the deeper water. 



Dredged by Crawshay at a number of positions S.S.W. of the 

 Eddystone in depths of 40-49 fms. (Journ. M.B.A., vol. 9, 1912, p. 347). 



Breeding. August (c.s.). 



Torquay. On a stone at Petit Tor Beach ; numerous on buoys 

 in Torquay Harbour {Elwcs, Journ. M.B.A., vol. 9, 1910, p. 66). 



FiLOGRANA implexa (Berkeley) : de St. Joseph, Ann. Sci. Nat. Zool, 

 XVII. 1894, p. 335 ; ditto, p. 340 as Sahnacina Dysteri Huxley. 



Plymouth. In quantity from Millbay Channel, from the piles 

 of the Promenade Pier (e.j.a.) ; on piles at the entrance to Millbay 

 Dock (r.a.t.) ; on the Breakwater (t.v.h.). Occasionally met with 

 in all dredgings from the Sound and on the outer grounds to the 

 Eddystone. 



Recorded by Crawshay at three stations S.S.W. of the Eddystone 

 in 42-43 fms. (Journ. M.B.A., vol. 9, 1912, p. 347). 



The distinction given by de St. Joseph and others between 

 Filograna and Salmacina is that the former has opercula, whilst 

 the latter has not. Mcintosh considers the two forms the same, 

 a view which is accepted by Cunningham and Ramage (Trans. ■ Roy. 

 Soc. Edin. XXXIII. 1888, p. 673) and by Southern "(Proceed. R. Irish Acad. 

 XXXI. 47, 1914, p. 147). The Plymouth specimens, of which a consider- 

 able number have been specially examined, have been without 

 opercula. 



Breeding. July, August and September (c.s.). 



Spirorbis borealis Daudin : de St. Joseph, Ann. Sci. Nat. Zool. XVII. 

 1894, p. 345. 



