POLYCH.ETA OF PLYMOUTH. 631 



Plymouth. Eddystone Grrounds (t.v.h.). On the shore at Rum 

 Bay in crevices of shale. 



PoLYDORA HOPLURA Claparede : Mcintosh, Mon. Brit. Ann. III. 1, 

 1915, p. 212. 

 Plymouth. Boring in limestone of the Plymouth Breakwater. 



Magelona papillicornis Fr. Miiller : Mcintosh, Mon. Brit. Ann. III. 

 1, 1915, p. 223. 



Plymouth. In fine sand near low-water mark at JennyclifE Bay, 

 under Batten Castle, on the south shore of Yealni Estuary, and in 

 Wembury Bay. 



Larvae in townets in July and August (e.j.a.) ; in September 

 (e.j.b.). 



Torquay. One example at a very low spring tide on Tor Abbey 

 Sands {Elwes, Joum. M.B.A., vol. 9, 1910, p. 62). 



DISOMID^. 



PoECiLOCH^TUS SERPENS Allen : Quart. Journ. Micr. Sci. vol. XLVIII. 

 1904, p. 79. 



Plymouth. In sand at low tide south of Batten Castle ; larvae 

 not uncommon in the plankton during the summer months. 



Adults have since been found by Southern in sand on the shore 

 of Lough Swilly (Proceed. Roy. Irish Acad. XXXI. 47, 1914, p. 105). 



CHJETOPTERID^. 



Ch.^topterus variopedatus (Renier) : Mcintosh, Mon. Brit. Ann. III. 

 1, 1915, p. 120. 



Plymouth. Common in muddy gravel on the Eddystone Grounds, 

 Rame-Eddystone and Looe-Eddystone Grounds (e.j.a.) ; occasional 

 specimens Duke Rock (t.v.h.) ; Asia Shoal (r.a.t.), Millbay Channel 

 (r.a.t., e.j.a.) and Mewstone Echinoderm Ground (r.a.t.) : Stoke 

 Point Grounds (s.p.). A few specimens at a number of positions 

 S.S.W. of the Eddystone in depths of 40-51 fms. were taken by 

 Crawshay (Joum. M.B.A., vol. 9, 1912, p. 343). 



Larvae in townettings July to October (w.g.). 



Breeding. Ripe eggs and sperm in July (a.j.s., e.j.a.). 



Salcombe. Found on the shore at extreme low water on the 

 west side of the Salstone and on the zostera bank near the mouth 

 of the harbour on the western side. (Journ. M.B.A., vol. c, 1900, p. 195), 



Phylloch^topterus anglica Potts : Proceed. Zool. Soc. London, 

 1914, p. 984. 



Plymouth. From material brought in by trawlers from some 

 locality to the south of the Eddystone {Potts, loc. at.). 



