VI CONTENTS. 



Page 

 nidce {Echinus esctilentus), by M. Dufosse; Remarks on Opalina 

 Naidosy an Entozoon found in XheNa'iadcB, by Dr. O. Schmidt ; On 

 the Formation of Cylindrical Masses of Snow in Orkney, by Charles 

 Clouston, Esq.; Meteorological Observations and Table ... 279 — 288 



NUMBER CXXVII. 



XXXII. Further Observations on the Formation of the Flints of 

 the Upper Chalk, with Remarks on the Sponge Theory of Mr. Bower- 

 bank. By J. TouLMiN Smith, Esq 289 



XXXIII. Descriptions and Notices of British Shells. By J. Gwyn 

 Jeffreys, F.R. & L.S 309 



XXXIV. Notes on the genus of Insects Omias, with descriptions of 

 new species. By John Walton, F.L.S 314 



XXXV. On the Development of the Lycopodiacece. By Karl 

 MiJLLER. (With five Plates.) 317 



XXXVI. On the Discovery of Silurian Rocks in Cornwall. By Sir 

 Roderick Impey Murchison, G.C. St. S., F.R.S., V.P.G.S. &c 326 



XXXVII. First series of Supplementary Notes to a former Paper, 

 entitled " An Account of some Shells and other Invertebrate Forms 

 found on the coast of Northumberland and of Durham." By William 

 King, Curator of the Newcastle Museum 334 



New Books: — Outlines of Structural and Physiological Botany, by 

 Arthur Henfrey, F.L.S. &c. — Supplement to English Botany. — 

 Cybele Britannica ; or British Plants and their Geographical Rela- 

 tions, by H. C. Watson 340—344 



Proceedings of the Linnaean Society; Zoological Society 344 — 353 



Microscopic Anatomy of the Shell of the Decapodous Crustacea, by 

 J. Lavalle ; The Tea-Plant of China ; Description of two new 

 species of Shells, by William Case ; Trichina spiralis ; Meteoro- 

 logical Observations and Table 353—360 



NUMBER CXXVIII. 



XXXVIII. Biological Contributions. By George J. Allman, M.B., 

 F.R.C.S.L, M.R.I.A., Professor of Botany in Trinity College, Dublin, ' 

 late Demonstrator of Anatomy and Conservator of the Anatomical 

 Museum, T.C.D. (With two Plates.) 361 



XXXIX. Ornithological Notes. By John Blackwall, F.L.S. ... 371 

 XL. Descriptions of new British Coleoptera, with additional Notes. 



By James Hardy, Esq 379 



XLI. On a new genus of Labyrinthi-bronchial Fish from Quelli- 



mane. By Dr. W. Peters. (With a Plate.) 384 



XLM. Descriptions of new or imperfectly described Lepidopterous 



