348 Dr. W. C. M'Intosh 07i the 



AnomtapatelUformis, L. Oj). cit. ii, p. 34, v. pi. 20. f. 2, 2 a-2 c. 

 Common in the same region, as well as between tide-marks 



Fam. 2. Ostreidae, Broderip. 



Genus OsTREA, L. 



Ostrea edulis^ L. Op. cit. ii. p. 38, v. pi. 21. 



Living examples are rare. The " rock " variety with 

 purplish streaks, however, is occasionally found at the East 

 Rocks on the under surface of stones in pools near low water. 



Fam. 3. Pectinidae, Lamarck. 



Genus 1. Pecten, Pliny. 



Pecten pusto, L. Oj). cit. ii. p. 51, v. pi. 22. f. 1 & la. 



Common ; the living specimens come from the deep water 

 of the bay, chiefly attached to bivalves. Worn valves are 

 abundant in the gravel at the East Rocks. 



Pecten opercularis^ L. Op. cit. ii. p. 59, v. pi. 22. f. 3 & 3 a. 



Frequently brought by the fishing-boats, and thrown on the 

 beach after storms. 



Pecten tigrinus^ O. F. Mliller. Ojy- cit. ii. p. 65, v. pi. 23. 

 f. 2 & 2 a. 



Perfect specimens from the coralline ground and the 

 stomachs of haddocks and flounders ; single valves on the 

 beach in gravel and after storms. 



Pecten similisj Laskey. Oj). cit. ii. p. 71, v. pi. 23. f. 5. 



Frequent in the stomachs of flounders and haddocks ; more 

 rarely procured from the coralline ground. 



Pecten maximus^ L. Op. cit. ii. p. 73, v. pi. 24. 



Occasionally brought up on the deep-sea lines of the fisher- 

 men. 



Genus 2. Lima, Brugui^re. 



Lima subauriculata^ Mont. Op. cit. ii. p. 82, v. pi. 25. f. 3. 



Not common ; from the deep water of the bay. 



