IV CONTENTS. 



Page 



IX. On Clostophis and Rhiostoma, new Burmese Genera of Land- 

 Shells. By W. H. BENSON, Esq 95 



X. On the Nomenclature of the Foraminifera. By W. K. PARKER, 



M. Micr. Soc., and T. R. JONES, F.G.S 98 



XI. Note on the Comparative Size of Marine Mollusca in various 

 Latitudes of the European Seas. By R. M'ANDREW, F.R.S 116 



XII. On some new Longicornia from the Moluccas. By FRANCIS 



P. PASCOE, F.L.S. &c 119 



XIII. On the Markings of the Diatomaceae in common use as 

 Test-objects. By G. C. WALLICH, M.D 122 



XIV. Note in answer to Mr. Clark's Remarks on Lepton sulcatu- 

 lum. By J. GWYN JEFFREYS, Esq., F.R.S 131 



New Book : On the Origin of Species by means of Natural Selection ; 

 or, the Preservation of Favoured Races in the Struggle for Life, 

 by Charles Darwin, M.A., F.R.S., F.G.S. &c 132 



Proceedings of the Zoological Society 143 150 



On the Nidification of the Kingfisher (Alcedo ispidd), by John 

 Gould, F.R.S. &c. ; Descriptions of new Species of Salamanders 

 from China and Siam, by Dr. J. E. Gray, F.R.S. &c 150, 151 



NUMBER XXVII. 



XV. On new Fossil Crustacea from the Silurian Rocks. By 



J. W. SALTER, F.G.S., A.L.S 153 



XVI. On the Aphanarthra of the Canary Islands. By T. VERNON 

 WOLLASTON, M.A., F.L.S 163 



XVII. Description of Uriechis microlepidotus, a new Snake from 

 South Africa. By Dr. A. GUNTHER. (With a Plate.) 168 



XVIII. Description of Leptodeira torquata, a new Snake from 

 Central America. By Dr. A. GUNTHER. (With a Plate.) 169 



XIX. Descriptions of two British Spiders new to Science. By the 

 Rev. O. P. CAMBRIDGE, B.A 171 



XX. On the Nomenclature of the Foraminifera. By W. K. 

 PARKER, M. Micr. Soc., and T. R. JONES, F.G.S 174 



XXI. Descriptions of Desmidiacese from Lower Bengal. By G. C. 

 WALLICH, M.D., F.L.S. (With two Plates.) 184 



XXII. Remarks on Mr. M 'Andrew's " Note on the Comparative 



