22 34 



Proceedings of the Royal Irish Academy. 



Alder (Joshua) and Albany Hancock : 



A Monograph of the British Nudibranchiate Mollusca. Bay Soc, 1845- 

 1855. {Aid. and ffanc. 1851.) 



Forbes (Edward) and Sylvanus Hanley : 



A History of British Mollusca and their Shells. 4 vols. 1853. 

 (Forbes, '53.) 



Thompson (William) : 



The Natural History of Ireland, vol. iv. 1856. (Thompson, '56.) 



Nichols (A. B.) : 



A List of the Marine Mollusca of Ireland. Proc. R. I. Acad., 3rd Ser., 

 vol. v, pp. 477-662, 1900. {Nichols, 1900.) 



VII. Index of Genera. 



printed in italics.) 





(Synonyms ai*e p 



Page. 



Acanthochites, . . 11 



Acanthodoris, . 





25 



Acern. 









. 22 



Aclis, 









. 14 



Acniaea, 









12 



Actaeon, 









22 



Actaeonia, 









22 



Adeorbis, 









16 



Aeolis, 









23 



Alvania, 









15 



Anomia, 









26 



Aplysia, 









21 



Aporrhais, 









17 



Area, 









26 



Archidoris, 









24 



Arctica, . 









28 



Astarte, . 









28 



Axinus, . . 









28 



Barleeia, 









16 



Bela, . . 









19 



Bittium, 









16 



Braehystomi 



i» • 







18 









Page 



Buecimun, . . . . 19 



Bulinella, . 







. 22 



Bulla, . . 







. 22 



Cadlina, . 







. 24 



Caecum, 







. 17 



Calliostoma, 







. 13 



Callochiton, 







. 12 



Capulus, 







14 



Cardium, 







32 



Cenia, 







22 



Ceratia, . . . 







16 



Cerithium, . 







16 



Cerithiopsis, 







16 



Chenopus, . 







17 



Chiton, . . . 







11 



Cingula, 







16 



Cioniscus, . 







14 



Circe, 







31 



Circulus, . . 







13 



Clathurella, 







19 



Cochlodesma, . 







33 



Corbula, . . . 







32 



