

CONTENTS OF VOL. VI. 



[SECOND SERIES.] 



NUMBER XXXI. 



Page 



I. Outlines of a Monograph of the genus Leoiiiodon. By John 



Ball, M.R.I.A 1 



II. Description of Asplanchna priodonta, an animal of the Class 

 Rotifera. By Thilip Henry Gosse, A.L.S , M.M.S. (With two 

 Plates.) 18 



III. Description of the Enlomostraca of the Pleistocene Beds of 

 Newbury, Copford, Clacton, and Grays. By T. Rupert Jones, Esq. 

 (With a Plate.) 25 



IV. Observations on the Zac?/n<E. By William Clark, Esq 29 



V. On Scopolia, Anisodus and. Mandragora. ByJoHNMiERs, Esq., 

 F.R.S., F.L.S 35 



VI. Descriptions of -^^/ii(/e5. By Francis Walker, F.L.S 41 



New Books : — An Elementary Course of Geology, Mineralogy, and 

 Physical Geography, by D. T. Ansted, M.A., F.R.S. &c.— An 

 Arctic Voyage to Baffin's Bay and Lancaster Sound in search of 

 friends with Sir John Franklin, by Robert A. Goodsir 48 — 51 



Proceedings of the Zoological Society ; Botanical Society of Edin- 

 burgh 51—66 



Notes on Medusae and Polypes, by T. H. Huxley, Esq. ; On the Circu- 

 latory Apparatus and the Organs of Respiration in the Arachnida, 

 by M. Emile Blanchard ; Long-suspended Vitality of a Snail, by 

 W. Baird, Esq. ; Way in which Toads shed their skins, by Prof. 

 Henslow ; On the Habitat of Cypraea umhiUcata, Sowerby, by 

 Ronald Gunn, Esq. ; Glyceria pedlcellata ; Supplementary Note 

 to Mr. R. Jones's paper on Fossil Entomostraca ; Erratum in Mr. 

 Owen's Notes on the Hippopotamus ; Meteorological Observations 

 and Table 66 — 72 



