CONTENTS. Vll 



Page 

 XLVI. On the Pithe'cheir melamire of F. Cuvier. Bv J. Van der 

 liOEVEN '. 470 



XLVII. Characters of a new Burmese Sfreptaxis and of two forms 

 belonging to a peculiar section of Helix collected by Captain Richard 

 H. Sankey, Madras Engineers, By W. H. Benson, Esq 471 



XLVIII. On the Nomenclature of the Foraminifera. By Messrs. 

 W. K. Parker, M. Micr. Soc, and T. Rupert Jones, F.G.S 474 



XLIX. Remarks on the use of the Signs of Accent and Quantity 

 as Guides to the Pronunciation of Words derived from the Classical 

 Languages, with particular reference to Zoological and Botanical 

 Terms. By R. G. Latham, M.D., F.R.S. &c 483 



L. Descriptions of new and little-known species of Ceylonese 

 Nudibranchiate Mollusks. By Dr. E. F. Kelaart 488 



LL Notes on British Mollusca, in answer to Mr. William Clark's 

 Remarks on "Gleanings in British Conchology." By J. Gwyn 

 Jeffreys, Esq., F.R.S 496 



Proceedings of the Royal Society ; Geological Society 499 — 510 



On the Difficidty of defining the Species of Mollusca, by Dr. J. E. Gray, 

 F.R.S. &c.; Saxicava a Byssus-spinner, by F. H. West, Esq. ; 

 Fertile Hybrids of two species of Insects, by M. Guerin-Meneville ; 

 The Victoria regia used as Food ; On the Coihng of Tendrils, 

 by Prof. Asa Gray ; On the Habits of the Scythrops Nova: Hol- 

 landitB, by George Bennett, Esq. ; On a Nematoid Worm living 

 parasitieally in the Egg of Limax griseus, by A. Bartheleray , 5 1 — 5 1 5 



Index 516 



