246 Mr. Thompson's Additions to the Fauna of Ireland. 



in 1818 at the Nymph Bank, off the southern coast. One spe- 

 cimen, which is perfect, is 4 inches across ; the arms of the other, 

 though much injured, are each 5 inches in length. The spe- 

 cies is admirably represented in the Zoologia Danica. 



Stellonia violacea, mihi. 



Asterias violacea, Mull. Zool. Dan. vol. ii. p. 7. tab. 46. Northern, 

 eastern, and southern (R. Ball) coasts. The typical forms of 

 S. violacea and S. ruhens are very distinct in appearance, yet, 

 through their varieties, they sometimes approach so nearly as to 

 render the propriety of their separation as species somewhat 

 doubtful. 



Stellonia glacialis, Forb. Wern. Mem. vol. viii. 



Asterias glacialis, Linn. 



angulosa. Mull. Z. D. vol. ii. p. 1. tab. 41. Youghal, Mr. 



R. Ball ; south-west coast of Cork, Mr. G. J. AUman. This 

 species attains a very large size on the southern coast ; on the 

 north-east I have obtained a few very small specimens only. 

 Ast. glacialis is noticed in Templeton's catalogue as having 

 been found by Mr. Grimshaw, from whom I learn that the A. 

 glacialis of Flem. Brit. Anim. {Stell. rubens, Forbes) is the spe- 

 cies alluded to, and not the present one. 

 f Stellonia hispida, Forb. Wern. Mem. 



\ Asterias hispida, Penn. Coast of Down, W. T. 



f Luidia fragilissima, Forbes. 



\ Asterias rubens, Johnst. Mag. Nat. Hist. vol. ix. p. 144, f. 20. 

 Common about Youghal, Mr. R. Ball ; Glendore, county Cork, 

 Mr. Allman. 



Ophiura albida, Forbes. Common on the north-east coast. This 

 species, lately described by Mr. Forbes (Wern. Mem. vol. viii.) 

 as distinct from 0. texturata, had been so distinguished by Mr. 

 Hyndman and myself for some years. 



Ophiocoma neglecta, Forb. Wern. Mem. 



Ophiura neglecta, Johnst. Mag. Nat. Hist. vol. viii. p. 467. f. 42. 

 Common on the north-east coast. The first specimen obtained 

 by Mr. Hyndman and myself, in Strangford lough in January 

 1834, was set apart as an undescribed Ophiura. Dr. Johnston, 

 taking a similar view, described the species as new in the fol- 

 lowing year. 



Ophiocoma bellis, Forb. Wern. Mem. 



Ophiura bellis, Flem. Brit. Anim. Coast of Dublin, Mr. R. Ball, 

 Mr. Hyndman ; Belfast and Strangford loughs, W. T. 



Ophiocoma granulata, Forb. Wern. Mem. 



