66 MARINE FAUNA OF ST. ANDREWS. 



Xucula 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, Miiller. 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. 



. I rca tetragona, Poli. 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 arc 

 dredged off the bay in deep water. 



Fam. 8. Kelliids, Forbes & Ilanley. 

 Genus 2. Montacuta, Turton. 

 Montacuta bidentata, Mont. Op. cit. ii. p. 208, v. pi. 31. f. 8. 

 Abundant in shell-debris on the West Sands. 



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

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

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

 the West Sands after storms. 



Genus 3. Las^ea, Leach. 

 Lascca rubra, Mont. Op. cit. ii. p. 219, v. pi. 32. f. 1. 

 Abundant amongst alga?, in crevices under stones in rock- 

 pools, and in the cavities of shells between tide-marks. 



