CYNTHIA. 39 



7. C. LiMACiNA, E. Forbes. 



Plate D, fig. 4. 



Body depressed, expanded, doridiform ; test coriaceous, orange, 

 with dark-brown reticulating markings, enclosing numerous small 

 depressed warts of various sizes ; orifices quadrangular, papillose, 

 almost sessile, broAvn. Three-quarters of an inch in length. 



On a dead shell in twenty-five fathoms, Mount's Bay, Cornwall, 

 (1846,) R. M'Andrew and E. Forbes. 



8. C. MORus, E. Forbes. 



Plate D, fig. 2. 



Body oblong, attached throughout the length of its base, ru- 

 gose, with more or less rounded tubercular spaces, rose-red ; orifices 

 nearly sessile, distinct, placed at about the same level, banded 

 with alternate stripes of orange and red ; tunic very tough. 



Length three-quarters of an inch, height half an inch. 



Mounts Bay, Cornwall, on stones in twenty-five fathoms wa- 

 ter, R. M'Andrew and E. Forbes. " Taken on an oyster at 

 Fowey by Mr. Peach. Very like a raspberry when contracted," 

 Mr. Alder. 



9. 0. RusTiCA, Linnseus, (Sp.) 



Ascidia rustica, M'uller, Zool. Dan. pi. 15, f. 1. — Phallusia rustica, Fleming, 

 Brit. An. p. 4G9. 



Body more or less globular or botryoidal, rugose, usually of a 

 rusty red ; apertures sessile, placed apart, deeply tinged with 

 rose-red. From half an inch to two inches in length. 



A coriaceous, white, smooth, but nodulose, botryoidal ascidian 

 occurs in deep water on the coast of Cornwall, apparently a va- 

 riety of this species. There is considerable confusion, however, 

 about Cynthia rustica. It is very doubtful whether the figures 

 of Muller really represent only one species. Lamarck has wrongly 

 referred Ascidia scah-a, A. asjyersa, and A. jxUula to varieties of 

 rustica. 



Common on most parts of our coast, on fuci. 



