VI CONTENTS. 



Pag« 

 Notices of the Royal Menageries in London, by Richard Taylor, 

 Esq., F.L.S., F.G.S. ; A Monograph of Macrochisma, a genus of 

 Gasteropodous MoUusea belonging to the family Fissurellidae, by 

 Arthur Adams, R.N., F.L.S. ; Meteorological Observations and 

 Table 346—352 



NUMBER XLVII. 



XXVIII. Notes on British Zoophytes, with descriptions of some 

 new species. By the Rev. Thomas Hincks, B.A. (With a Plate.) 353 



XXIX. A List of all the Mosses and Hepaticse hitherto observed in 

 Sussex. By William Mitten, A.L.S 362 



XXX. On the Branchial Currents in Pholas and Mya. By Joshua 

 Alder and Albany Hancock. (With a Plate.) 370 



XXXI. Notice of a Barytic Deposit in certain Testacea from the 

 London Clay. By N. T. Wetherell, Esq., F.G.S., M.R.C.S 378 



XXXII. An attempt to arrange the species of the family Pholadidce 

 into Natural Groups. By John Edward Gray, Esq., F.R.S., Vice- 

 President of the Zoological Society 380 



XXXIII. On some new Cambro-Silurian Fossils. By Frederick 

 M'CoY, Professor of Geology and Mineralogy in Queen's College, 

 Belfast 387 



Proceedings of the Zoological Society; Botanical Society of Edin- 

 burgh 409—426 



On Parasitism, by M. Leon Dufour ; Rare Irish MoUusca, by Alex- 

 ander G. Melville; On the Umbrella Bird {Cephalopterus or- 

 natus), " Ueramimbe," L. G., by Alfred R. Wallace ; On the Ge- 

 nera Hexapus and Arges of De Haan, by J. D. Dana ; Note on 

 the Reproduction of Leeches, by M. Fremond; Meteorological 

 Observations and Table 425 — 432 



NUMBER XLVIII. 



XXXIV. Zoological Notes and Observations made on board H.M.S. 

 Rattlesnake. — Upon Thalassicolla, a new Zoophyte. By Thomas 



H. Huxley, F.R.S., Assistant Surgeon R.N. (With a Plate.) 433 



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

 Structure, Functions, CEconomy, and Systematic Arrangement. By 

 John Blackv^'all, F.L.S 442 



XXXVI. Description of a new species of Pterocyclos, Benson, from 

 Southern India. By W. H. Benson, Esq 460 



