CONTENTS. 



ORIGINAL COMMUNICATIONS. 

 I. Notes on the Land and Fresh Water Mollusca of Great Britain, 

 with a revised list of Species. By Joshua Alder, Member of 

 the Natural History Society of Newcastle-upon-Tyne, Page 101 



II. On the Botany of Erris, County Mayo, and a notice of several ad- 

 ditions to the Flora Hibernica. By Charles C. Babington, 

 M. A., F. L. S., &c. - - 119 



III. Notes upon Subaquatic Insects, with the description of a New Ge- 



nus of British Staphylinidse. By J. O. Westwood, F. L. S., &c. 124 



IV. The Natural History of the British Entomostraca. By William 



Baird, Surgeon, H. C. S. Continued, - - 132 



V, Directions for the preservation of Sea Plants, with Miscellaneous Re- 

 marks on a number of species collected at Cairnlough Bay, on 

 the Coast of Antrim, in the months of May and June 1836. By 

 James S. Drummond, M. D. President of the Belfast Natural 

 History Society, &c. - 144 



VI. Obseivations on the Caprimulgus Europseus (Night-Jar.) By Dr 



W. B. Clarke, Ipswich, - 158 



VII. On the advancement of Local Botany in the environs of London, 

 with remarks relative to the Dispersion of Plants in that vicinity, 

 and the formation of plans exhibiting the Distribution of Species 

 over localities. By Daniel Cooper, Curator to the Botanical 

 Society of London, &c- - - - 163 



VIII. Contributions to the Natural History of Ireland. By William 

 Thompson, Esq. Vice-President of the Belfast Natural History 

 Society. Continued, - - - 170 



IX. Account of a Botanical Excursion in the Alps of the Canton of Va- 

 lais, Switzerland, in August 1835 ; and Catalogue of the Plants 

 collected, with occasional Remarks. By R. J. Shuttleworth, 

 Esq. Continued, - 180 



PLATES. 



Zoology. Plate IV. Micralymma Johnstonis. 

 V. British Entomostraca. 



