Mr. Thompson's Additions to the Fauna of Ireland. 253 



Cellepora cervicornis, &c. from the southern coast, in Mr. R. 

 Ball's collection. North-east coast, W. T. 

 Discopora hispida, Flem. Johnst. B. Z. 270. pi. 31 . f. 9—1 1 *. Not 

 uncommon on marine plants and shells in the north and south. 

 Cellepora cervicornis, Flem. Johnst. B. Z. 276. pi. 33. Obtained 



many years ago in abundance from the Nymph Bank by R. 



Ball. Esq. 

 Lepralia hyalina, Johnst. B. Z. 277. 

 Cellepora hyalina, Linn. Common on marine plants, &c. on the 



shores of Ireland from north to south. 

 Lepralia nitida, Johnst. B. Z. 277. pi. 34. f. 7. 

 Cellepora nitida, Fabr. On stones, &c. dredged in deep water at 



entrance of Strangford lough. 

 Lepralia coccinea, Johnst. B. Z. 278. pi. 34. f. 1 — 3. 

 Cellepora coccinea, Lamour. This species first occurred to me of a 



snow white colour, on the bark of a tree washed ashore at 



Bangor (Down) in January 1834 : — on stones and shells 



dredged in deep water on the north-east coast, it was of the 



ordinary pale reddish purple hue. 

 Lepralia variolosa, Johnst, B. Z. 278. pi. 34. f. 4. On Pinna 



dredged at Cork, and favoured me by Mr. R. Ball, rare. I have 



obtained this species on the shell of the common edible crab 



(Cancer Pagurus, Leach) taken near the entrance of Belfast bay. 

 Lepralia ciliata, Johnst. B. Z. 279. pi. 34. f. 6. 

 Eschara ciliata. Pall. Common on marine plants, shells, &c. around 



the Irish coast. 

 Lepralia immersa, Johnst. B. Z. 280. pi. 34. f. 8. 

 Berenicea immersa, Flem. On Pinna from Cork. North-east and 



Dublin coast, Mr. Hyndman and W. T. 

 Flustra lineata, Linn. Johnst. B. Z. 288, pi. 37. f. 4. On Lamina^ 



ria digitata and on stones dredged in Strangford lough. W. T. 

 ■\Flustra tuberculata, Johnst. B. Z. 289. pi. 34. f. 9. On shells and 



stones from Belfast and Strangford loughs. W. T. 

 Alcyonidium gelatinosum, Lamour. Johnst. 300. pi. 41. f. 1 — 3. 



Ulva diaphana, Eng. Bot. t. 263. Of occasional occurrence on 



the north-east coast. W. T. 



* Dr. Johnston's figures represent a singular state of the species j the 

 ordinary one is very different. 



f Flustra spongiosa, Templeton, Mag. Nat. Hist, ix. 469. Membranipora 

 spongiosa, Brit. Zoop. p. 2.32, is identical with Flustra ? carnosa of the latter 

 work. Dr. Johnston agrees that the specific name spongiosa should, in 

 right of priority, be retained for the species. 



