TESTACEOUS MOLLUSCA. 73 



not the true islaudicus, — a very rare species, — but 

 =■■ gracilis, DaC. The confusion has been general, cf. 



Jeff. B.C. IV, 334, sqq.] 

 Fusus gracilis, DaC. 



Is found to be generally distributed in a live state : 



common in winter at Port Erin on. the crab -pots 



(F.A.). 

 Fusus propinquus, Alder. 



Llandulas Pt. (F.A.), Birkdale (G.W.C.), rare and 



dead only. 

 Nassa incrassata, Strom. 



c. alive at Port Erin (F.A.). 

 Defrancia linearis, Mont. 



One alive and several dead at Port Erin (F.A.). 

 *Plewrotoi)ia costata, Don., omitted from Rep. I. 



Dead in 15—20 fms., N. Wales (Forbes). 

 Pleurotoma nehula, Mont. 



Dead at Tynygongl and Bull Bay (F.A.), and at 



Southport extremely rare (G.W.C.). 

 Pleurotoma tiirricida, Mont. 



Has now been dredged alive as follows : — central 



area : Bull Bay and Colwyn Bay (F.A.) : c. 23 m. W. 



of Southport (G.W.C.). 

 *Utriciolus truncatulus, Brug., new to district. 



Fleetw^ood (W.H.H.) : Puffin Is., small specimens 



(G.W.C.). 

 TJtriculus ohtusus, Mort. 



6 living at W. Kirby (F.A.), thus confirming Byerley's 



locality between Hilbre Is. and mainland (teste F. P. 



Marrat). 

 Scaphander lignarius, L. 



2 living off Bradda Head, and taken also near Kitter- 



land, Port Erin (F.A.). 



