CONTENTS OF VOL. XVII. 



[SECOND SERIES.] 



NUMBER XCVII. 



Tage 



I. On the Conjugation of Cocconeis, Cymbella and Amphora; 

 together with some Remarks on Amphiphora alata (?), Kg. By H. 

 J. Carter, Esq., Assistant-Surgeon H.C.S., Bombay. (With a 

 Plate.) 1 



II. Description of a new species of Clausilia from the neighbour- 

 hood of Cheltenham. By A. Schmidt 10 



III. Memoir on the Indian species of Shrews. By Edward Blyth, 

 Esq. With Notes by Robert F. Tomes, Esq 11 



IV. On the Mechanism of Aquatic Respiration and on the Struc- 

 tiu-e of the Organs of Breathing in Invertebrate Animals. By Thomas 

 Williams, M.D. Lond. (With a Plate.) 28 



V. On the Origin of the Geographical Distribution of Crustacea. 



By Mr. James U. Dana 42 



VI. On Anthracosia, a Fossil Genus of the Family Unionidce. By 

 William King, Professor of Mineralogy and Geology in Queen's 

 CoUege, Galway. (With a Plate.) 51 



VII. On the Genoa Assiminia 57 



New Books : — Recherches sur les Crinoides du Terrain Carbonifere de 

 la Belgiquc, par L. de Kouinck et H. le lion. — A Lecture on the 

 Geological History of Newbury, Berks, by T. Rupert Jones, 

 F.G.S 58—61 



Proceedings of the Zoological Society; Botanical Society of Edin- 

 burgh 62 — 74 



Observations on the Blistering Beetles of the neighbourhood of 

 Montevideo, by M. A. Courbon ; Unusual Dearth of Algae in 1855, 

 by John Cocks ; Observations on Echini perforating the Granite 



