E 20 3 
F I G. XXVII. 
Shells fmooth: of a chefnut color: margii) 
with five folds. 
Common upon the ploughed fields: recent 
upon the coaft of Norway. 
FIG. XXVIII. 
Shells ftriated both their lenghth and bread|:h; 
margin with three folds, 
^F'ound amongft the rubble under the turf 
upon Hampton-down, and lodged in free-flone 
with Fig. 25^ and 30 upon KingVdown. 
FIG. XXIX. 
Upper valve convex: lower valve nearly flat: 
beak very fmajl; Shells ftriatgd ftom the hinge 
to the edges. 
^F I G. XXX. 
Woodward’s foifils. Tome 1 . fart JI. p. 50. f. 366^ 
§67, 368. ' ' . ^ 
