CONTENTS. V 



, ^ Page 



XVIII. Contributions to British Palaeontology : — Some new Lower 

 Palaeozoic Mollusca. By F. M'Coy, Professor of Geology and Mine- 

 ralogy in Queen's College, Belfast 189 



XIX. On some of the Animals of the Chemnitzice which have not 

 been described. By William Clark, Esq 195 



XX. On the Sloughing of the Spider-Crab {Maia Squinado). By 



P. H. GossE, A.L.S 210 



New Books ; — Plantse Javanicae Rariores, descriptae Iconibusque illus- 

 tratae, quas in Insula Java, annis 1802-18, legit et investigavit 

 Thomas Horsfield, M.D. ; e siccis Descriptiones et Characteres 

 plurimarum elaboravit Joannes J. Bennett ; Observationes Struc- 

 turam et Affinitates praesertim respicientes passim adjecit Robertus 

 Brown 213 



Proceedings of the Linnaean Society ; Royal Society ; Botanical So- 

 ciety of Edinburgh 216—237 



Notice of the Occurrence, on the Durham Coast, oi DiphylUdia lineata, 

 by Albany Hancock, Esq. ; Irish Mollusca, by W. W. Walpole ; 

 On the Irritability of the Leaves of Drosera rotundifolia, by 

 Dr. Milde ; Embryogeny of Orchis, Gesneria, and other Phane- 

 rogamia; Meteorological Observations and Table 237 — 240 



NUMBER LVIII. 



XXI. Observations on the Nidification of Gasterosteus aculeatus 

 and Gasterosteiis spinacMa. By Albany Hancock, Esq 241 



XXII. A Catalogue of British Spiders, including remarks on their 

 Structure, Functions, (Economy, and Systematic Arrangement. By 

 John Blackwall, F.L.S 248 



XXIII. On some undescribed Animals of the British RissocB. By 

 William Clark, Esq 254 



XXIV. On keeping Marine Animals and Plants alive in unchanged 

 Sea-Water. By P. H. Gosse, A.L.S 263 



XXV. Notes on the Genus Cyclostoma ; and Characters of some 

 new species from India, Borneo, and Natal. By W. H. Benson, Esq. 268 



XXVI. Observations on the Natural History of the Water- Snail 

 and Fish kept in a confined and limited portion of Water. By Robert 

 Warington, Esq 2/3 



XXVII. Description of a new species of Wart Pig from the Cama- 

 roons. Bv J. E. Gray, Ph.D., F.R.S., V.P.Z.S 280 



