CONTENTS. 



Page. 



XXV. On the recent Doctrines of Vegetable Embryology. By 



Herbert Giraud, Esq., Member of the Council cf the Botanical So- 

 ciety of Edinburgh. (With a Plate.) 225 



XXVI. Observations on the Family Helicidce, and description of a 

 new Genus. By Dr. L. Pfeiffer of Cassel 238 



XXVII. Some Remarks on the foregoing Paper of Dr. L. Pfeiffer, 

 especially on the Clausium of Clausilia. By John Edward Gray, 

 F.R.S., Keeper of the Zoological Collection in the British Museum . 243 



XXVIII. Additions to the Fauna of Ireland. By W. Thompson, 

 Esq., Vice-Pres. Nat. Hist. Society of Belfast 245 



XXIX. On the "Freshwater Carriers," or Thelidomus of Mr. 

 Swainson 257 



XXX. Monograph of the Dorylida, a Family of the Hymenoptera 

 Heterogyna. By W. E. Shuckard, Esq 258 



XXXI. Miscellanea Zoologica. By George Johnston, M.D., &c. 



— Beania mirabilis, a new Genus of Zoophyte 272 



XXXII. Descriptions, &c. of some rare or interesting Indigenous 

 Insects. By John Curtis, Esq., F.L.S., &c 274 



XXXIII. Information respecting Botanical and Zoological Travellers : — 

 Mr. Schomburgk's recent Expedition in Guiana : — Otters of 



Guiana , 282 



BIBLIOGRAPHICAL NOTICES. 



A Manual of the Land and Freshwater Shells of the British Islands, 

 with Figures of each of the kinds. By William Turton, M.D. 

 A new Edition, by John Edward Gray, F.R.S 288 



PROCEEDINGS OF LEARNED SOCIETIES. 



Wernerian Natural History Society : — Professor Traill on the Food 



and Structure of the Humming-Birds '. 290 



Microscopical Society : — Dr. Lindley on Animalcules in the Anthe- 



ridia of Polytrichum 291 



MISCELLANEOUS. 



On a Torpedo taken on the Irish Coast. By Wm. Thompson, Esq. 292 



Meteorological Observations 295 



Meteorological Table 296 



