350 Dr. W. C. M'Intosh on the 



Fam. 6. Arcidae, Lowe. 



Genus 1. Nucula, Lamarck. 



Niicula nucleus^ L. 0;p. cit. ii. p. 143, v. pi. 29. f. 2. 



Common in the bay ; brought in by the fishing-boats, and 

 frequent in the stomachs of cod and haddocks. 



Nucula nitida^ G. B. Sowerby. Ojy. cit. ii. p. 149, v. pi. 29. 

 f. 3 & 3 a. 

 Not rare off the East Rocks in sandy gravel between the 

 rocky ridges, and in the stomachs of haddocks and cod. 



Nucula tenuis^ Mont. Op. cit. ii. p. 151, v. pi. 29. f. 4. 

 From deep water and the stomachs of cod and haddocks. 



Genus 2. Leda, Schumacher. 

 Leda minuta, Muller. Op. cit. ii. p. 155, v. pi. 29. f. 6. 

 Common in deep water and the stomachs of flounders. 



Genus 4. Pectunculus, Lamarck. 

 Pectunculus glycymeris^ L. Op. cit. ii. p. 166, v. pi. 30. f. 2. 



Abundant in the bay ; generally brought in by the fishing- 

 boats. 



Genus 5. Arca, L. 



Area tetragona^ Poll. Op. cit. ii. p. 180, v. pi. 30. f. 6. 



Instead of the clusters in which it appears in the chinks of 

 the rocks in the Channel Islands, solitary examples only are 

 dredged off the bay in deep water. 



Fam. 8. Kelliidae, Forbes & Hanley. 

 Genus 2. Montacuta, Turton. 

 Montacuta hidentata^ Mont. Op>. cit. ii. p. 208, v. pi. 31. f. 8. 

 Abundant in shell-debris on the West Sands. 



Montacuta ferruginosa, Mont. Op. cit. ii. p. 210, v. pi. 31. f. 9. 



Common in the deep water of tlie bay and in the stomachs 

 of cod, haddocks, and flounders j also in the shell-debris on 

 the West Sands after storms. 



