iv CONTENTS. hnging to the Section of Pouched Rats. By John Vaughan Thompson, Esq. F.L.S. " " P- ^^^ IX. An Analysis of Satin Spar from Alston Moor in Cum- berland. By the Rev. John Holme, A.M. and F.L.S. p. 164 X. Description of Miis Castoridcs, a new Species. By the Rev. E. J. Burrow, A.M. F.L.S. - - - p. 167 XI. On JVoodsia, a new Genus of Ferns. By Robert Brown, Esq. F.R.S. Lib. L.S. - - - - - p. 170 XII. An Account of four rare Species of British Birds. By Mr. WilUam Bullock, F.L.S. ... p., 175 PART 11. XIII. All Account of some new and rare British Shells and Animals. By George Montagu, Esq. F.L.S. - p. 179 XIV. Observations on Cancer salinus. By the Rev. Thomas Rackett, F.R.S. and L.S. - - - - p. 205 XV. Description of the Corvus leucolophus, or White-crowned Crow of India, in a Letter to Aylmer Bourke Lambert, Esq. F.R.S. andA.S. V.P.L.S. By Lieut. -Colonel Tho- mas Hardwicke, F.L.S. - - - - p. 207 XVI. Some Account of the Trichiurus Lepturus of Linnaus, found on the Shore of the Moray-Frith. By Mr. James Hoy, F.L.S. ------ p. 210 XVII. On the Deoxidation of the Leaves of Cotyledon caly- cina; in a Letter to A.B. Lambert, Esq., Vice-President of the Linnean Society. By Benjamin Ileyne, M.D. F.L.S. - p. 213 XVIII. Description of a new British Rubus, with Corrections of