Molluscoida of St. Andreics. 305 



IlippotJioa divaricafa, Lamx. ; Busk, Catal. p. 30, 



pi. 18. f. 3 & 4. 



On stones and shells from deep water ; abundant. ► 



Family Gemellariadse. 



Genus Gemellaria, Sav. 



Gemcllaria loricata^ L. ; Busk, Catal. p. 34, pi. 45. f. 5 &. 6. 



Al)undant in deep water, and thrown on shore in masses 

 after storms. 



Family Bicellariadse. 



Genus BiCELLARiA, De Blainville. 



Bicellai'ia ciliata. L. ; Busk, Catal. p. 41, pi. 34. 



Frequent on stones and shells from the coralline ground. 



Genus BUGULA, Oken. 



Bugida jlaheHata (J. V. Thompson, MS.), Gray; Busk, Catal. 

 p. 44, pis. 51 & 52. 



On Flustra fuUacea from deep water; rather rare. 



Bucjxda avicularia^ Pallas ; Busk, Catal. p. 45, pi. 53. 



From the coralline ground, on Flustra truncata] not 

 common. 



Bugula purpurotincta^ Norman, Quart. Journ. Micr. Sci. 

 n. s. vol. viii. p. 219. 



Abundant on the same ground, attached to shells. 



Bugula Murray ana^ Bean ; Busk, Catal. p. 46, pi. 59. 



Plentiful on the beach after storms, and at all times from 

 the coralline ground. 



Family Flustridae. 



Genus Flustra, L. 



Flustra foUacea^ L. ; Busk, Catal. p. 47, pi. 55. f. 4 & 5, 

 pi. 56. f. 5. 



Very abundant on the sands after storms. 



Flustra truncata^ L. ; Busk, Catal. p. 48, pi. 56. f. 1 c^ 2, 

 pi. 58. f. 1 & 2. 



Common in the laminarian and coralline zones. 



