CONTENTS. Vll 



Page 

 present Epoch, by Prof. J. W. Bailey; On the Cumce, by Prof. 

 Agassiz ; Note on Callitriche hamulata, by Frederick Townsend; 

 Rare British Birds, by W. P. Cocks; Descriptions of two new 

 species of the genus Orthotomus, by Frederick Moore, Assist. 

 Mus. East India Company; Meteorological Observations and 

 Table 424—432 



NUMBER CVIII. 



XXXVI. New Land Shells collected by E. L. Layard, Esq., and 

 described by W. H. Benson, Esq 433 



XXXVII. Descriptions of three new British Zoophytes. By 

 Joshua Alder, Esq. (With a Plate.) 439 



XXXVIII. Elucidation of some Plants mentioned in Dr. Francis 

 Hamilton's Account of the Kingdom of Nepal. By Lieut. -Colonel 

 Madden, F.R.S.E., President of the Botanical Society of Edinburgh. 442 



XXXIX. Monograph of the genus Catops. By Andrew Murray. 457 



XL. On the Abnormal Operculum of Polydonta elegans of New 

 Zealand. By Dr. J. E. Gray, F.R.S. &c 468 



XLI. Note on Reticularia immersa and Halia prcetenuis. By the 

 Rev. Thomas Hincks, B.A 469 



XLII. Contribution to the Conchology of France. By J. Gwyn 

 Jeffreys, Esq., F.R.S .^^.^^,j^,^^,^^yj^.^^^^^,^^^^.,..... 471 



New Books : — Flora Vectensis : being a Systematic Description of the 

 Phsenogamous or Flowering Plants and Ferns indigenous to the 

 Isle of Wight, by the lateW. A. Bromfield, M.D. &c. Edited by 

 Sir W. J. Hooker and T. Bell Salter, M.D. — Sylloge Florae 

 Europsese sen plantarum vascularium Europae indigenarum enu- 

 meratio, adjectis synonymis gravioribus et indicata singularum 

 distributione geographica, auctore C. F. Nyman 473 — 475 



Proceedings of the Zoological Society ; Royal Society 4 75 — 491 



Observations on the Structure of the Retina in certain Animals, by 

 H. Miiller ; Remarks on Nika edulis, Risso, by William Thomp- 

 son ; Naucrates ductor, by W. P. Cocks ; On Peculiar and Quasi- 

 spontaneous Movements of the Plasmatic Cells of certain Ani- 

 mals, by Prof. KoUiker ; Description of a new species of Actinia 

 from the Devonshire Coast, by E. W. H. Holdsworth ; Meteoro- 

 logical Observations and Table 492 — 499 



Index 500 



