VI CONTENTS. 



Pa$e 



XXXVI. On some hitherto unnoticed peculiarities in the Structure 

 of the Capsule of Papaveraceee ; and on the Nature' of the Stigma of 

 Crucifera. By J. W. Howell, Esq., M.R.C.S 248 



XXXVII. Descriptions of some new Genera and fifty unrecorded 

 Species of Mammalia. By J. E. Gray, Esq., F.R.S 255 



XXXVIII. 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. 



On the Structure of the Nucleus of the genera Splicer ophor on 

 and Lichina 267 



XXXIX. Descriptions of Chalcidites discovered in Valdivia by C. 

 Darwin, Esq. By Francis Walker, F.L.S 271 



XL. The Crustacea of Ireland. By Wm. Thompson, Esq., Vice-Pres. 

 Nat. Hist. Society of Belfast 274 



XLI. A Catalogue of Sicilian Plants; with some remarks on the 

 Geography, Geology, and Vegetation of Sicily. By John Hogg, Esq., 

 M.A., F.L.S., F.C.P.S., &c 287 



XLII. Observations on a new Group, Genus, and Subgenus, of Fresh- 

 water Conferva?, with descriptions of Species mostly new. By Arthur 

 Hill Hassall, Esq., M.R.C.S.L., Corresponding Member of the Dublin 

 Natural History Society. {Continued.) 336 



XLI II. Observations on the Rodentia. By G. R. Waterhouse, 

 Esq., Curator to the Zoological Society of London. (With a Plate.) 

 {Continued.) 344 



XLIV. Information respecting Scientific Travellers 348 



New Books : — The Botanical Text-Book, by Asa Gray, M.D. — The 

 British Flora, comprising the Phaenogamous Plants and the Ferns, 

 by Sir W. J. Hooker, K.H., &c. — An Account of Askern and its 

 Mineral Springs, together with a Sketch of the Natural History of 

 the neighbourhood, by E. Lankester, M.D., F.L.S. , &c. — Excur- 

 cursions in and about Newfoundland during the years 1839 and 

 1840, by J. B. Jukes, M.A., F.G.S 352—358 



Proceedings of the Microscopical Society ; Botanical Society of Lon- 

 don ; Linnsean Society 358—363 



Filago Gallica, Linn. ; New British Carices ; Pus-like Globules of the 

 Blood ; Origin of Fibre — Structure of Fibrine and of False Mem- 

 branes ; An Extract of a Letter addressed to a friend containing 

 an account of Tortricides captured in the New Forest in the month 

 of September 1841, by Capucina; National Encouragement of 

 Science; Meteorological Observations and Table 363 — 368 



