470 ZOOPHYTES. 



Balbriggan Bay, brought me specimens of Fusus corneus, Turritella tere- 

 hru, and Natica Aider i, stating that out of thousands of univalve shells 

 examined by him there, these thi-ee species only were coated with A. 

 echuiafum. W. T. 



Genus Cycloum. 

 C. hispidum, Fabr. 



Ballysodare Bay, Co. Sligo, Mrs. Hancock. Dublin Bay, Miss Ball. 

 Sept., 1839. Belfast and Strangford Loughs, W. T. 



Genus Sarcochitu.m. 

 S. imlyoum, Hassall. 



North and East of Ireland, Dr. HassaU. 



July loth, 1848. — I found what appears to be this species in a limpet 

 between tide-marks at Cultra, and adherent to stones there also. Hassall 

 makes a similar remark, Johnst. B. Zoop., 2nd ed. p. 367. 



Genus Cristatella. 

 C. mucedo, Cuv. 



Fresh waters in East and South of Ireland. 



Genus Alcyonella. 

 A. stagnorum, Lam. 



Fresh waters. East of Ireland. 



Genus Plumatella. 

 P. repetis, Lam., Johnst. 

 In rejectamenta on the shores of Lough Erne, I obtained this species 

 in Sept., 1837. 



P. eman/inata, AUman. 

 East and South of Ireland, Prof. AUman. 



P. fruticosa, AUman. 

 East and South of Ireland, Prof AUman. 



Genus Fredeeicella. 

 F. Sultana, AUman. 



Bandon, Dublin, Prof. AUman. 



F. dilatata, AUman. 

 Fresh waters, DubUn, Prof. AUman, 



Ge7ius Paludicella. 

 P. articulate!, Gervais. 

 Grand Canal, Dublin, Prof. AUman. Lough Erne, 1837, W. T. 



