50 5 



An 



CONTENTS OF VOL. IX. 



NUMBER LV. 



Page 



I. Organography and Physiologic Sketch of the Class Fungi, by 

 C. Montagne, D,M. Extracted from ' Histoire physique, politique et 

 naturelle de l'ile de Cuba,' par M. Ramon de la Sagra, and translated 

 and illustrated with short notes by the Rev. M. J. Berkeley, M.A., 

 F.L.S 1 



II. On Hirudo geometra, Linn., and some other species of British 

 Freshwater Leeches. By T. Brightwell, Esq. of Norwich, F.L.S. 

 {With a Plate.) 11 



III. Contributions to the Ichthyology of Australia. By John Rich- 

 ardson, M.D., F.R.S., &c, Inspector of Hospitals, Haslar 15 



IV. Descriptions of several new species of Nudibranchous Mollusca 

 found on the coast of Northumberland. By Joshua Alder, Esq., and 

 Albany Hancock, Esq 31 



V. Insectorum novorum Centuria, auct. J. O. Westwood, F.L.S.... 36 



VI. Description of two new species of Mammalia discovered in Au- 

 stralia by Captain George Grey, Governor of South Australia. By J. 



E. Gray, Esq., F.R.S., &c 39 



VII. Excerpta Botanica, or abridged Extracts translated from the 

 Foreign Journals, illustrative of, or connected with, the Botany of 

 Great Britain. By W. A. Leighton, Esq., B.A., F.B.S.E., &c. 



Spach — Revisio Populorum et Betulacearum 42 



VIII. Description of a new species of Ichneumon {Herpestes) dis- 

 covered in Spain. By J. E. Gray, Esq., F.R.S., &c 49 



New Books: — Histoire Physiologique des Plantes d'Europe, ou expo- 

 sition des Phenomenes qu'elles presentent dans les diverses pe- 

 riodes de leur developpement, par J. P. Vaucher, Prof, a l'Acade- 

 mie de Geneve. — Transactions of the Berwickshire Naturalists' 

 Club 50—54 



Proceedings of the Zoological Society ; Microscopical Society ; Royal 



Society of Edinburgh ; Botanical Society of Edinburgh 54 — 72 



On the partiality of Slugs for Fungi, by C. Recluz ; University of Glas- 

 gow — Botany ; Bust of Professor Jameson ; M. A. De St. Hilaire 

 on the Epochs of Vegetation in different countries ; Mr. Westwood 

 on Government Patronage of Zoology ; Mr. Hassall on Phospho- 

 rescence ; Cygnus Guineensis — Norfolk Birds ; Meteorological Ob- 

 servations and Table 73—80 



