vi contents. 



Notes : — page 



Note on the DisiJersal of MoUusoa. By E. Caziot 3 



Note on the Epiphragms of Thaumastus Sangoce and T. bitceniatus. 



By E. A. Smith, I.S.O. (Figs.) 3 



Note on Damayantia Smithi, CoUinge & Godwin-Austen. By 



Lieut. -Col. H. H. Godwin-Austen, F.R.S 133 



A Correction in Nomenclature. By E. A. Smith, I.S.O 185 



Note on the Dates of Publication of the various parts of Moquin- 



Tandon's Hist. nat. Moll. terr. et fiuv. de France. By J. W. 



Taylor, F.L.S 186 



Note on Geitodoris planata (Alder & Hancock). By Sir C. N. E. 



Eliot, K.C.M.G 186 



Note on Oliva tigridella, Duclos. By F. G. Bridgman 187 



Note on Oliva oryza, Lamarck. By F. G. Bridgman 187 



Note on some Holocene Non-Marine Mollusca from Walton Heath, 



Surrey. By E. H. Chandler 187 



Note on the Horizon and Locality of the Type-specimen of Pleuro- 



7iautilus pulcher, G. C. Crick. By G. C. Crick, F.G.S 272 



Note on the Vitality of three Species of Littorina. By E. A. 



Smith, IS. 272 



Papers : — 

 Descriptions of new species of Land-Shells from Central and South 



America. By S. I. Da Costa. (Plate I.) 5 



Descriptions of Dolium mag.nificum, n.sp., and Murex multispinosus, 



n.sp. By G. B. SowERBY, F.L.S. (Figs.) 7 



Some remarks on the genera Damayantia, Issel, Collingea, Simr., 



and Isselentia, Cllge. By W. E. Collinge, M.Sc 9 



Descriptions of two new species oiMelania from the New Hebrides. 



By E. R. Sykes, B.A., F.L.S. (Figs.) 13 



Description of a Nautiloid, Ple^ironaittilus pulcher, n.sp., from the 



Carboniferous rocks of England. By G. C. Crick, F.G.S. 



(Plate II and Figs.) 15 



Description of a new species of Cassis. By E. A. Smith, I.S.O. 



(Fig.) 21 



On the Mollusca procured during the " Porcupine " Expeditions, 



1869-1870. Supplemental Notes, Part I. By E. R. Sykes, 



B.A., F.L.S. (Plate IIL) 23 



Notes on the Nervous System of the Pelecypoda. By R. H. Burne, 



B.A. (Figs.) 41 



On the genus Eurystoma of Albers (type vittata, Miiller), its 



anatomy and reference to other Indian species. By Lieut.- 



Col. H. H. Godwin-Adsten, F.R.S. (Plate IV.) 48 



