44 MARIXE FAUNA OF ST. ANDREWS. 



Bugula purpurotincta, Nonnan, Quart. Journ. Micr. Sci. 

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



Abundant on the same ground, attached to shells. 



Bugida Murrayana, Beau ; 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 foliacea, 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 & 2, 

 pi. 58. f. 1 & 2. 



Common in the laminarian and coralline zones. 



.asL-'iilJiiioifLax) vlljUJ. i- 



Genus Caebasea, Gray. 



Carbasea papyrea^ Pallas ; Busk, Catal. p. 50, pi. 50. f. 1-3. 



After storms, and from the fishing-boats ; not abundant. 



Family Membraniporidae. 



Genus Membranipora, De Blainville. 



Membranipora memhranacea, L.; Busk, Catal. p. 56, pi. 68. f.2. 



Abundant on the fronds of Laminaria digitata and other 

 algae. 



o" 



Membranipora pilosa, L. ; Busk, Catal. p. 56, pi. 71. 

 Very common on the stems and fronds of Delesseriw^ Lami- 

 narice, and other seaweeds between and beyond tide-marks, 

 and on shells and stones from the coralline groimd. 



Membranipora Flemingii, Busk ; Catal. p. 58, pi. 61. f. 2, 

 pi. 84. f. 4-6, pi. 104. f. 2-4. 



Common on stones and shells from the coralline ground. 



