CONTENTS. V 



Page 



XVIII. On the Law which has regulated the Introduction of New 

 Species. By Alfred R. Wallace, F.R.G.S 184 



XIX. On some new Species of Hemipedina from the Oolites. By 

 Thomas Wright, M.D., F.R.S.E 196 



XX. Short Biographical Notice of the late Dr. Johnston of Ber- 

 wick-upon-Tweed 199 



New Books : — The British Flora, comprising the Phsenogamous or 

 Flowering Plants and the Ferns. The 7th edition, with Additions 

 and Corrections, &c., by Sir Wilham Jackson Hooker, K.H., 

 D.C.L. &c. &c., and George A. Walker-Arnott, LL.D. &c. &c.... 203 



Proceedings of the Royal Society; Linnaean Society; Botanical 



Society of Edinburgh ; Zoological Society 205 — 229 



Monstrosity of Antirrhinum majus, by Dr. J. E. Gray ; Notice of the 

 Horns and Skull of the Arnee, by Dr. J. E. Gray ; Meteorolo- 

 gical Observations and Table 229—232 



NUMBER XCIV. 



XXI. The Vegetable Individual, in its relation to Species. By 

 Dr. Alexander Braun, Professor of Botany in the University of 

 Berlin, &c. Translated by Chas, Francis Stone 233 



XXII. Note on the Subgenus Limea, Broim. By John Lycett, 

 Esq .' 256 



XXIII. Notes on the Brachiopoda observed in a Dredging Tour 

 with Mr. M'Andrew on the Coast of Norway, in the summer of the 

 present year. By Lucas Barrett, F.G.S 257 



XXIV. On the Young States of some Annelides. By R. Leuckart. 

 (With a Plate.) 259 



XXV. Observations on the Genus Assiminia. By William 

 Clark, Esq 272 



XXVI. On the Morphology of the Organs called Lenticels. By 



M. E. Germain de Saint-Pierre 273 



New Books : — A Manual of Marir.e Zoology for the British Isles, by 



Philip Henry Gosse, A.L.S 277 



Proceedings of the Zoological Society ; Linnajan Society 278 — 296 



