84 JOURNAL OF CONCHOl.OGY, VOL. I3, NO. 3, JULY, I9IO. 



Kettleness ; valves, Sandsend (M.V.L.) ; alive in numbers near low 

 water mark, Scarborough. 



Astarte sulcata (daCosta). — Dogger Bank (Brady, Parke, 

 L. & M.) ; off Redcar (D.F.); valves not uncommon on rocks at 

 Scarborough, and young in shellsand ; off Flamborough (Parke and 

 M.B.A.). 



var. paucicostata Jeff. — Dogger Bank (L. & M.); off Scar- 

 borough (Harman). 



var. scotica Maton & Rackett. — Dogger Bank (Brady and Sc. 

 Mus.). 



var. minor Jeff. — Dogger Bank (L. & M.). 

 var. fusca Jeff. — Dogger Bank, 20-40 fatlioms (Marshall), 

 var. multicostata Jeff. — Dogger Bank (L. & M.). 

 var. incrassata Brocc. — Dogger Bank (L. & M.) ; off Scar- 

 borough. 



Astarte compressa (Montagu). — Throughout the off-shore area. 



var. striata Leach. — Widely distributed. 

 Goodallia triangularis (Montagu). — Dogger Bank, one (Parke) ; 

 Scarborough (Bean). 



Cyprina islandica (Linne). — Common. 



var. crassior Jeff. — Dogger Bank (L. & M.). 

 Loripes lacteus (Linne). — Scarborough (Bean). 

 Lucina borealis (Linne). — Dogger Bank (L. & M.) ; Redcar 

 (D.F.) ; Saltburn (M.L.T.); rare, eight miles off" Staithes, 25 fathoms 

 (Brady); Scarborough (Bean); frequently dredged at Scarborough 

 (Roberts). 



Thyasira flexuosa (Montagu). — Dogger Bank, small form in 

 mud, 45 fathoms (L. & M., Brady) ; Scarborough (Bean). 

 Thyasira croulinensis (Jeff.). — Dogger Bank (Marshall). 

 Montacuta substriata (Montagu). — Dogger Bank (Brady, 

 L. & M.) ; off Robin Hood's Bay, 20 fathoms (Brady) ; Scarborough 

 (Bean); on spines of echinoderm trawled fifteen miles off Scarborough, 

 var. laevis Jeff. — Dogger Bank, 35 fathoms (Marshall). 

 Montacuta bidentata (Montagu). — Dogger Bank (L. & M.); 

 shellsand, Sandsend (M.V.L.) ; not rare in shellsand, Scarborough. 



Tellimya ferruginosa (Montagu). — Dogger Bank (L. & M.); 

 Scarborough (Bean); valves occasional, Scarborough and Filey; 

 Bridlington Bay as food for plaice, and from Hornsea to Tees in deep 

 water (M.B.A.). 



Kellia suborbicularis (Montagu). — Generally common, living 

 from half-tide downwards in mud and under stones, Scarborough 

 and elsewhere, also in deserted Saxicava holes. 



Lassea rubra (Montagu).— Redcar (J.H.); Scarborough (Bean); 

 in similar habitats to Kellia in North Bay, Scarborough. 



