TESTACEOUS MOLLUSCA. 



67 



Saxicava rugosa, L. 



Abundant in many places, living : the var. arctica, L. 



also occurs. 

 * Teredo navalis, L. 



Southport, once in driftwood (G.W.C.) : one valve in 

 sand (W.H.H.). New to district. 



SCAPHOPODA. 



DentaUum entale, L. 



Colwyn Bay (F.A.), and once abundantly in central 

 area— living : dead at Bull Bay and Tynygongl (F.A.). 



Dentaliiim tarentinum, Lam. 



Central area, 25 m. N.W. of Bar Lightship, '2 or 3 

 dead shells (" Spindrift ") ; several 20 m. W. of South- 

 port (G.W.C). 



POLYPLACOPHORA. 



Chiton fascicular is, L. 



Scarce Hving at Porthwen (F.A.) and Llandudno 



(B.T.). 



Gastropoda. 



Tectura testuclinalis , Miill. 



Now abundant at Fleetwood (W.H.H.) : dredged 

 Kving but small at Port Erin, and one littoral speci- 

 men at Llandrillo (F.A.) : one fresh shell, Carnarvon 

 Bay (" Hyaena," 1890). 

 Tectura virginea, Miill. 



Common at roots of Laminaria on Piiftin Is. (A. Lei- 

 cester) : rare living at Llandudno (B.T.) : abundant 

 alive off Port Erin (F.A. ). 

 *Pu)ictureUa noachina, L. 



New to district. 2 dead in central area dredgings 

 (" Spindrift"). 

 Emarginula fissura, L. 



Dead shells of general occurrence. Tlie same applies 

 to Fissurella grcvca, L. 



