TAB. XXIX. 



Fig. 



1. Panopea Norvegica, p. 281. 



a, b, d, specimens from Chillcsford, showing the siphonal side considerably 



the shorter of the two. 

 c, specimen from the Red Crag, Sutton, siphonal side the larger. 



2. Glycimeris angusta, p. 291. 



a, c, d, from the Coralline Crag, Sudbourne. 



b, specimen rather more elongated, and less twisted, from the Red Crag, Sutton. 



3. Saxicava rugosa, p. 285. 



a, b, var- sulcata. Bridlington. 



e, var. rustica. Valves united ; from the Red Crag, Sutton. 

 f, var. distorta. Coralline Crag, Sutton. 

 ff, var. cylindrica. Red Crag, Butley. 



4. Saxicava arctica, p. 287. 



a, (Mytilus praecisus, 3Iont.) Coralline Crag, Sutton. 



b, (Solen minutus, Mont.) „ „ 



c, (Agina purpurea, Turf.) „ „ 



5. Saxicava ? carinata ? p. 289. „ » 



a — d, figures enlarged ; e, natural size. 



6. Saxicava ? fragilis, p. 288. Coralline Crag, Sutton. 



a — d, figures enlarged ; e, natural size. 



7. Sphenia? Binghami r p. 27G. Figure enlarged. Coralline Crag, Sutton. 



