VI INDEX. 



Tage. 



Lepidoptera, exhibition of rare British, 59 



, exhibition of Alpine, 65 



■ , catalogue of, captured near Chatham, 65 



, captured during 1858, 245 



Lcptocystinema Kinahani, new genus and species of Desmid, 114 



Portii (n. *.)> 115 



Lichenology, Irish, contributions to, 268, 276 



Lucernaria, notes on the genus, 73 



Lucornariada, notes on Irish, 188 



Lucasius myrmecophilus (». g. § *.), 194 



Macandrevia, a new Palliobranohiate Mollusc, 261 



Mackay, J. T., LL. D., additions to the plants of Ireland since the publication of the 



" Flora Hiberuica," by, 250 



Mackaya bella (n. g. § s.\ 253 



Madrepore, on a new Irish, 235 



Medusa, on a new naked-eyed, 279 



Memoir of the late Robert Ball, LL. D., 7 



Menipea cyathus, M. Buskii, new species of Polyzoa, 88 



M'Donnell, Robert, M. D., on the electrical nature of the power possessed by the 



Actinia of our shores, 54 



, on the urticating organs of Actinia, 163 



Moderatorships in natural and experimental sciences, and course of study prescribed 



for, 3 



Mollusca, Palliobranchiate, on three new genera of, 256 



Moore, David, A. L. S., on the occurrence of a singularly metamorphosed state of 



Bryum sanguineum, 70 



. , on additions to the Irish Flora, 71 



, observations on some plants considered by M. de Candolle 



to be alien or introduced into Britain, by, 227 



-, notes on additions to the Irish Flora, and notices of rare 



plants, by, 231 



Natural History Notes in Cornwall and Devon, 141 



Niphargus, on the genus, 237 



. fontanus and Kochianus (Spence Bate), («. «.), 258 



, on the habits and localities of, notes on, 241 



CMeara, Rev. Eugene, A. M., Catalogue of Diatomacere collected in Powerscourt, 

 county of Wicklow, by, ; 63 



, contributions towards a catalogue of the Diatomacea 



of the county of Dublin, by 148 



-, notes on the encysted nature of Diatoma vulgare, by, 1 64 



Oniscoid, on a new"British, 170 



Organs, urticating, on the, of Actinia, 163 



Ouvirandra fenestralis, exhibition of, 61 



Pandalus Jefireysii (Spence Bate), (n. s.), 151 



Patterson, Robert, F. R. S., note on the occurrence of the IlyperoodonButzkopf, by, 4 



, memoir of the late Robert Ball, LL. D., by, 7 



; — , on a new naked-eyed Medusa, 279 



Penium Berginii, a new species of Desmid, 121 



Plants, on new South African, 135 



alien to Great Britain, on some, 227 



, additions to the Irish 250 



, on new. from Cape of Good Hope, 253 



Platyartbrus Hoffmanseggii, 170,190 



