Fie. 
PEATE XXIII. 
1,a,6. Crassatella compressa (var. hemileia), Edwards, p. 165. Brook. 
YD. th (de 
3. 
A, a, 6. 
Daley Ob 
6, a, 6. 
7, a, 6. 
8, a, 6. 
9. 
10, 4, 6. 
11, a—e. 
125.4, 6. 
13, a—c. 
14, a, 6. 
15; a—c. 
tenuisulcata, Edwards, p.171. Barton. 
sinuosa, Lamarck, y. 168. Bracklesham. 
sulcata (var. gradata), p.171. High Chiff. 
compressa, Lamarck, py. 164. Huntingbridge. 
Sowerbyi, Edwards, p. 169, Stubbington. 
sulcata (var. ensiformis), p.170. Barton. 
Grignonensis, Deshayes, py. 166. Bracklesham. 
sinuosa ? Lamarck, y. 168. Barton. 
Grignonensis (var. Anglica), p. 166. High Cliff. 
sulcata, Solander, y. 170. Barton. 
subquadrata, Edwards, py. 169. a. White Chiff Bay. 4. Barton. 
Sowerbyi (var. Hantoniensis), p. 169. Brockenhurst. 
plicata, J. Sowerby, y. 167. Bracklesham. 
gibbosula, Deshayes, py. 165. Bracklesham. 
