CONTENTS. Vll 



Page 



NUMBER CXIV. 



XXXIII. Researches ou the Development of the Pectinibranchiata. 

 By J. KoREN and D. C. Danielssen 43ii 



, XXXIV. List of Coleoptera received from Old Calabar, on the 

 West Coast of Africa. By Andrew Murray, Edinburgh. (With 

 a Plate.) 443 



XXXV. Descriptions of two new species of Heteropodous Mollusca. 



By Arthur Adams, Surgeon R.N 461 



XXXVI. Notes on the Permian System of the Counties of Durham 

 and Northumberland. By Richard Howse, Esq 463 



XXXVII. Notes on Sepia biserialis and Sepia elegans. By Joshua 

 Alder, Esq 474 



XXXVIII. On some Mites and their young states. By A. Scheu- 

 TEN. (With a Plate.) 475 



New Books : — Manual of the Botany of the Northern United States, 

 by Asa Gray, Professor of Natural History in Harvard University. 

 — A Dictionary of Botanical Terms, by the Rev. J. S. Henslow, 

 M.A., Professor of Botany in the University of Cambridge. — 

 The British Botanist's Field-book : a Synopsis of the British 

 Flowering Plants, by A. P. Childs, F.R.C.S 479—482 



Proceedings of the Zoological Society 482 — 494 



Note on the Anatomy and Physiology of the Pulmoniferous Mollusca, 

 by Dr. C. Semper ; Note on the Invertebrate Fauna of the Baltic 

 Sea, by G. Lindstrom ; The Blacks of Moreton Bay and the 

 Porpoises, by J. K. E. Fairholme; On Eolis Landsburgii, by 

 I. J. Moser 495—498 



Index 499 



