48 MARINE FAUNA OF ST. ANDREWS. 



Lepralia grant/era, Johnst. ; Busk, Catal. p. 83, pi. 77. f. 2, 

 pi. 95. f. 6 & 7. 



Abundant on the under surface of stones near low-water 

 mark in considerable patches. The aspects of the old and 

 new cells differ much. The new cells glisten like those of 

 L. hyalina, have a number of opaque white granules, a D- 

 shaped aperture, and a distinct mucro ; the transverse wrinkles 

 of the cells are also apparent ; and in some very new ones the 

 granules are also glistening and hyaline, and show the per- 

 forations. In the old cells the walls are opaque, whitish, or 

 yellowish, the granules still more opaque, perhaps larger, but 

 less defined and beautiful. 



Lepralia hyalina, L. ; Busk, Catal. p. 84, pi. 82. f. 1-3, 

 pi. 95. f. 3-5, pi. 101. f. 1 & 2. 



Common on laminarian roots and stems, on Delesseria and 

 other algse, and on stones near and beyond low-water mark. 



Family Celleporids. 



Genus Cellepora, Fab. 



Section A. Incrusting, adnate. 



Cdhpora pumicosa, L. ; Busk, Catal. p. 86, pi. 110. f. 4-6. 

 Very abundant on stones, shells, zoophytes, and seaweeds — 

 generally from deep water. 



Cellepora avicularis, Hincks ; Catal. Zooph. Devon, 

 Ann. & Mag. Nat. Hist. 3rd ser. ix. p. 304. 



Occasionally on zoophytes. 



Section B. Erect, branching. 



Cellepora ramulosa, L. ; Busk, Catal. p. 87, pi. 109. f. 1-3. 

 Attached to the stems of zoophytes &c. in deep water; 

 common. 



Cellepora dichotoma, Hincks, Catal. Zooph., lor. eit. p. 305. 

 On zoophytes ; abundant and fine. 



