LEPRALIA FOLIACEA. 303 



and its luxuriant growth, it differs in no respect either 

 in the plan of its gemmation or the character of its cell 

 from the simply incrusting forms with which it is asso- 

 ciated. 



For the occurrence of the remarkable variety fascialis, 

 which is common in the Mediterranean, on our coasts, 

 we have only the authority of Pallas, who says that he 

 had seen a specimen from the Isle of Wight. Milne- 

 Edwards considered it to be a distinct species ; but Pallas 

 tells us that he had seen many transitional forms between 

 it and the common lamellate variety, and had no doubt 

 of their specific identity. 



Joliet has observed two varieties of this species at Ros- 

 coff one red, which is the commoner, and the other white ; 

 in the latter both the living portions of the colony and 

 the bells of the polypides are of a very pale colour *. 



HABITAT. On shells and stones (chiefly) from deep 

 water. 



LOCALITIES. Isle of Wight, on oysters (Ellis) : South 

 Devon, common, off Budleigh, Exmouth, &c. ; Ilfracombe, 

 off the Capstone ; Guernsey (T. H.) : Sussex, frequent 

 (Dillwyn) : about 2 miles N.N.W. from the Eddystone, 

 very common; off the Deadman, occasionally (Couch) : Fal- 

 mouth Bay (Miss Vigors) : off Cape Clear (W. Todhunter) : 

 Isle of Man (Dr. G. D. Brown) : the Minch, Hebrides 

 (A. M.N.). This is the most northern locality yet re- 

 corded. Var. a. South Devon (T. H.) . 



GEOGRAPHICAL DISTRIBUTION. Mediterranean (M'An- 

 drew) : Adriatic, on stones, not common (Heller) : ibid. 

 Lussin, 24 fathoms (Grubc) : Algiers (J. Y. J.) : La 

 Charente Inferieure and La Gironde, sometimes in enor- 

 mous masses (Fischer) : Roscoff, very common (Joliet) : 



' Bryosoaires dea o6te dc France,' 1877, r 



