82 MARINE FAUNA OF ST. ANDREWS. 



Geniis 6. Fusus, Bruguifere. 

 Fusus antiquus, L. Op. cit. iv. p. 323, v. pi. 85. f. 1 & 2. 

 Abundant in the coralline zone, and frequently thrown on 

 shore after storms. 



Fusus gracilis^ Da Costa. Op. cit. iv. p. 335, v. pi. 86. f. 2. 

 Common on the West Sands after storms, and often brought 

 in by the fishing-boats. 



Fusus propinquus, Alder. Op. cit. iv. p. 338, v. p. 219, 

 pi. 86. f. 3. 



Occasionally procured from the deep-sea lines of the fisher- 

 men. 



Fam. 29. Nassidae, Stimpson. 

 Genus 1. Nassa, Lamk. 

 Nassa incrassata, Strom. Op. cit. iv. p. 351, v. pi. 88. f. 1. 

 Common in the laminarian region and under stones between 

 tide-marks ; while worn shells are abundant in debris at the 

 East Rocks. An egg-capsule is shown in Plate IX. fig. 4. 



Fam. 30. Pleurotomidae, LovAi. 



Genus 1. Deprancia, Millet. 

 Defrancia linearis, Mont. Op. cit. iv. p. 368, v. pi. 89. f. 2. 

 From deep water ; rather rare. 



Genus 2. Pleurotoma, Lamk. 

 Pleurotoma costata, Donovan. Op. cit. iv. p. 379, v. pi. 90. f. 3. 

 Occasionally in shell-dt%ris from the West Sands. 



Pleurotoma rufa, Montagu. Op. cit. iv. p. 392, v. pi. 91. f. 6. 

 Common on the West Sands after storms. 



Pleurotoma turricula, Montagu. Op. cit. iv. p. 395, 

 V. pi. 91. f. 7. 



Abundant under the same circumstances. 



