CLAVA DIFFUSA. 9 



red, moss-like bunches " on Fucus vesiculosus at low- 

 water mark, where they are exposed to the dash of the 

 breaking surf. 



Hal). On a mussel-shell from Morecombe Bay (F. II . 



West) . 



[North America (Agassiz).j 



5. C. NODOSA, T. S. Wright. 



" Observat. on British Zoophytes and Protozoa," Edinb. N. Phil. Journ. 

 (New Ser.) xvi. 154. 



POLYPITES single, small, aurora-coloured, each springing 

 from a small knot of convoluted tubes ; POLYPARY mem- 

 branous. 



"THE very delicate threads of the polypary creep over 

 the fronds of the seaweed, and at intervals twine them- 

 selves into a convoluted knot of membranous tubes, from 

 which a single polyp arises. This species occurs only at 

 low-tide mark, while C. repens [inulticornis] , for which it 

 may be mistaken, is found in shallow rock-pools" (T. S. W.). 

 Hab. On the fronds of Delesseria sanguined, at Queens- 

 ferry and Largo (T. S. W.). 



6. C. DIFFUSA, Allman. 



Ann. & Mag. N, H. (3rd .ser.) xi. 8 (Jan. 1863). 



POLYPITES very slender, of a light rose-colour, developed at 

 intervals upon a reticulated stolon; tentacula about 20, 

 CJOXOPHORES scattered, some produced just behind the 

 posterior tentacula, others extending singly or in small 

 clusters for some distance backwards upon the body of 

 the polypitc. 



Height about | inch. 



I GIVE this species on the authority of Prof. Allman, and 



