PLYMOUTH MARINE INVERTEBRATE FAUNA. 285 



[ Nudibranchiata — confi/.: Pulmonata : Scaphopoda : Pelecypoda ] 

 Idalina (Idaliella) aspersa (Alder & Hancock) : J. Alder & Hancock, 

 Moiiogr. Brit. Nudibr. Moll., p. 46, fig. (as Idalia). 

 Yealm Est.i ; off Penlee Pt.i (w.G.). 

 Ancula cristata (Alder): J. Alder & Hancock, Mouogr. Brit. Nudibr. 

 Moll., p. 45, fig. 



Hocks below the Lab. (e.j.a.): near the Ladies' Bathing Pool 

 (w.G., T.V.H.): oil the piles at Millbay Dock (r.a.t.) : Drake's L 

 (w.G., W.I.B., R.A.T.) : Cawsand B. (w.G.) : Batten B., amongst coral- 

 lines, etc. (w.i.B.): Jeniiyclift' B. (r.a.t.). 



PULMONATA. 

 Otinidse. 

 Otina OTIS (Turtou): J. G. Jeffreys, Brit. Conch., vol. v, p. 110, fig. 



Common in empty barnacle shells near high-water mark on 

 the rocks under West Hoe and below Laboratory (r.a.t.) : very 

 abundant near high-water mark in rock crevices, etc., gregarious 

 within limited areas ; Drake's L ; cave under Eam's Cliff' Pt. ; 

 etc. (S.P.). 



Auriculidse. 



Leuconia bidentata (Montagu): J. G. Jefreys, Brit. Conch., vol. v, 

 p. 104, fig. (as Melampus). 



Rocks under West Hoe, in empty barnacle shells (r.a.t.): common 

 in crevices of rocks near high- water mark; Jennycliff' B.; Drake's I.; 

 etc. (s.p.). 



SCAPHOPODA. 



Dentalium entalis, Linnaeus: J. G. Jefreijs, Brit. Conch., vol. iii, 

 p. 191, fig. 



Not uncommon on the fine sand grounds, 15-30 fms. (r.a.t., 

 S.p.) : Eddystone Gds., on all fine sand grounds except the 'Outer' 

 trawling ground, and occasionally on gravel (e.j.a.). 



PELECYPODA. 



Nuculidae, 



NUCULA NITIDA, G. B. Sowerby : E. Forbes & Hanky, Hist. Brit. Moll., 

 vol. ii, p. 218, fig. 



Jennycliff B., Cawsand B. ; in muddy sand (r.a.t.) : Eddystone 

 Gds., in the fine sand of the 'Outer' trawling ground (e.j.a.). 

 Nucula nucleus (Liniiieus): U. Forbes & Hanky, Hist. Brit. Moll., 

 vol. ii, p. 215, fig. 



Common on muddy gravel, 10-30 fms. (S.P.) : Millbay sliell- 

 gravel ; Cawsand B. ; Mewstone Gds. (R.A.T.) : Eddystone Gds. 

 (E.J.A.). 



Anomiidse. 

 >Anomia epiiippium, Liniianis : ./. (/. Jeff)-e)js, Brit. Conch., vol. ii, 

 p. 30, fig. 



More or less common everywhere, L.W.-30 fms., on stones, 

 shells, rocks, etc. (R.A.T.): Eddystone Gds., wherever suitable attach- 

 ment can be found, least frequent on the fine sand grounds (e.j.a.). 



