272 PLYMOUTH MAlilNE INVEnTEBKATE FAUNA. 



[ Prosobranchiata— to/(A/.] 

 Calyptr.EA CHlNENSIS (Liiinteus) : J. G. Jeffreys, Brit. Conch., vol. iii, 

 p. 273, fig. 



The Sound, connnon in dredgings on stony ground, attached to 

 stones, sliells, etc. ; Asia Sh. ; Millbay Ch. ; the Bridge ; etc. (s.P.) : 

 Yealni II., always present in dredgings; Cavvsand B. ; etc. (r.a.t.) : 

 Yealm Sand-bank, between tide-marks (s.P.). 

 Breeding: July (r.a.t.) : Aug.-Sept. (s.P.). 



Cypraeidse. 



Trivia europ.^u (Montagu): E. Forbes tt Hanley, Hist. Brit. Moll., 

 vol. iii, p. 495, fig. (as Cyprcm). 



More or less abundant everywhere, particularly on rocky or 

 stony ground, L.AV.-30 fnis. ; the form occurring in deeper water is 

 usually small and has a smooth, fawn-coloured mantle (s.P.). 



Ovula (Slmnia) patula (Pennant) : J. G. Jeffreys, Brit. Conch., vol. iv, 

 p. 407, fig. 



Not uncommon on Alcyonium digitatum, 10-30 fms. ; Mewstone 

 Ledge; Stoke Pt. Gds. ; etc. (s.P.): Mewstone Ledge, on Eunicclla'^ 



(W.I.B.). 



Spaw-n probably belonging to this species has been found in Apr., 

 June- July (r.a.t.). 



Erato l.evis (Donovan) : /. G. Jeffreys, Brit. Conch., vol. iv, p. 400, fig. 

 (as Mavfiinclla). 



Not uncommon on gravel grounds, 15-30 fms. (s.P.). 



Naticidae. 



Natica (Luxatia) Alderi, Forbes : J. G. Jeffreys, Brit. Conch., vol. iv, 

 p. 224, fig. 



Not imcommon on clean sand and gravel, L.W.-35 fms. (s.P.) : 

 Drake's 1., sand-patch at N. end, occasionally; Cawsand B., not un- 

 common ; Mewstone 'Echinoderni' Gd. ; Kame - Eddystone Gds. 

 (R.A.T., S.P.): Stoke Pt. Gds. (s.P.): Eddystone Gds. (e.j.a., s.p.): 

 Yealm E., on the sand-bank opposite the Coastguard Station (r.a.t.). 



Breeding : June (r.a.t.). 



Natica (Luxatia) catexa (da Costa) : ./. G. Jeffreys, Brit. Conch., vol. iv, 

 p. 220, fig. 



On sandy bottoms (w.g.) : rare (s.p.). 

 Breeding : Apr. (w.g.). 



Lamellariidse, 



Lamellaria perspicua (Linnreus): E. Forbes & Hanley, Hist. Brit. 

 Moll., vol. iii, p. 355, fig. ; p. 338, fig. (as L. tentetadatn). 



Not uncommon between tide-marks and in dredgings from tlie 

 Sound, etc. (s.P.): occasionnlly on the outside grounds, 15-30 fms. 

 (r.a.t., MM.b., s.p.) : Yealm P.. not uncommon (r.a.T., S.P.). 

 Spawn : Jan. -May (w.g.). 

 Velutixa l^:vigata (Pennant): J. G. Jeffreys, Brit. Conch., vol. iv, 

 p. 240, fig. 



Mewstone ' Echinoderm ' Gd. (r.a.t.). 



