82 JOURNAL OF CONCHOI.OGV, VOL. I3, NO. 3, JULY, I9IO. 



Craspedochilus onyx (Spengler).— Dogger Bank (Brady) ; Tees 

 Mouth and off Whitby (M.B.A.) ; off Scarborough, 15 fathoms 

 (W.C.H. and Sc. Mus.); Cayton Bay and Hayburn Wyke (D). 

 Craspedochilus cinereus (Linne). — Abundant. 

 Acanthochites fascicularis (Linne). — Redcar (W.C.H.) ; 

 common, Sandsend (M.V.L.) ; found occasionally in both bays, 

 Scarborough ; Filey (I).). 



Nucula nucleus (Linne). — Generally distributed. 



var. radiata Forbes & Hanley. — Dogger Bank (L. & M.). 

 Nucula nitida G. B. Sowerby. — Widely distributed. 



var. turgida Marshall. — Dogger Bank (L. & M.). 

 Nuculana minuta (Miiller). — Dogger Bank, moderately com- 

 mon (Brady and others); Scarborough (Sc. Mus.); Withernsea 

 (M.B.A.). 



var. brevirostris Jeff — Off Scarborough (Jeff.). 

 var. curta Marshall. — Dogger Bank (Marshall). 

 Nuculana tenuis (Philippi). — Dogger Bank (Brady); one in 

 shellsand, Sandsend (M.V.L); Scarborough (Bean and Sc. Mus.); 

 one fresh specimen in shellsand, South Bay, Scarborough. 

 Anomia ephippium Linne. — Abundant. 



var. squamula Linne'. — Dogger Bank (L. & M.); Scarborough 

 (Bean). 



var. aculeata Miiller. — ^Dogger Bank (Brady and L. & M.); 

 common, Sandsend (M.V.L.); Scarborough (Bean and M.B.A.). 



Anomia patelliformis Linne.— Redcar (D.F.) ; off the coast, 

 Scarborough (J. S. Edwards); with A. ephippium at Scarborough, but 

 much rarer; Bridlington Bay, Flamborough (M.B.A.). 



Glycimeris glycimeris (Linne). — Dogger Bank (L. & M.); 

 Scarborough (Bean and Sc. Mus.) ; occasionally brought into Scar- 

 borough by trawlers. 



Barbatia lactea (Linne). — Filey (Strickland); Dogger Bank, 

 single valves (Parke); Scarborough (Bean). 



Area tetragona Poll. — Dogger Bank (L. & M.); off the Tees 

 (M.B.A.) ; rare, Scarborough (Bean). 



Area nodulosa Miiller. — Dogger Bank (L. & M.).— Identified 

 by Jeffreys as Area imbricata Poli, but as above by Leckenby. 

 Mytilus edulis Linne. — Common. 



var. galloprovincialis Lamarck. — North Bay, common, 

 var. pellucida Pennant. — Scarborough (Bean); Bridlington, 

 var. incurvata Pennant. — Scarborough (Bean and Sc. Mus.) ; 

 Scalby Mills. 



Volsella modiolus (Linne). — Common. 



Volsella barbata (Linne). — Staithes (A. T. Watson); rare, on 

 rocks and stony ground in 18 fathoms, Scarborough (Bean). 



