CONTENTS OF VOL. XVIII. 



[SECOND SERIES.] 



NUMBER cm. 



Page 



I. Monograph of the genus Ca^oj95. By Andrew Murray 1 



II. On a second new species of Sphcdrium from the Paddington 

 Canal. By Dr. J. E. Gray, F.R.S. &c 25 



III. On the Hahits of the Orang-Utan of Borneo. By Alfred 



R. Wallace 26 



IV. Polyzoa collected by Mr. M^Andrew on the Coast of Norway 

 and Finmark in 1856. By George Busk, F.R.S. & L.S. (With a 

 Plate.) 32 



V. On the Evils of Increasing Synonyms. By S. P. Woodward, 

 F.G.S 36 



VI. Observations on the External Characters and Internal Ana- 

 tomy of a Bitentaculate Slug found at the Island of Aneiteum, New 

 Hebrides. By John Denis Macdonald, R.N. (With a Plate.)... 38 



VII. On Vegetable Cell-formation. By Prof. Arthur Henfrey, 

 F.R.S 42 



VIII. On the Method of Palaeontology. By Thomas H. Huxley, 

 F.R.S., Lecturer on General Natural History at the Government 

 School of Mines, and Fullerian Professor of Physiology R.I 43 



New Books: — The Ferns of Great Britain, illustrated by J. E. Sowerby; 

 the Descriptions by C. Johnson. — The Ferns of Great Britain and 

 their Allies, by Anne Pratt. — The Fern- Allies, illustrated by J. E. 

 Sowerby; the Descriptions by C. Johnson. — British Poisonous 

 Plants, by C. Johnson 54 



Proceedings of the Zoological Society; Royal Institution of Great 



Britain; Botanical Society of Edinburgh 56 — 73 



Note on Edwardsia vestita (Forbes), by P. H. Gosse ; On Cyclas 

 lacustris, Draparnaud, by J. Gwyn Jeffreys ; Occurrence of Clau- 



