VI CONTENTS OF VOL. IV. 



Page 

 Description of a new species of Apogonia discovered by M. L. Ritsema 



in Java. By D. Sharp 159. 



Two new species of Lucanoid Coleoptera from Sumatra. Described by 

 C. Ritsema Cz 168. 



Two new species of the Dynastid genus Dickodontus Burm. Described by 

 C. Ritsema Cz 167. 



On an undescribed Cetoniid belonging to the genus Chalcothea Burm. 

 By C. Ritsema Cz 171. 



A new genus of the Cetonid group Macronotidae. Characterized by 

 C. Ritsema Cz 173. 



A new species of the Buprestid genus Chrysochroa from Sumatra. 



Described by C. Ritsema Cz 175. 



On three new species of Rhynchophorous Coleoptera from Sumatra. 

 By C. Ritsema Cz 177. 



Six new species of the Rhynchophorous genus Oxyrrhynchv,s Schonh. 

 Described by C. Ritsema Cz 181. 



A new species of the Brenthid genus Stratiorrhina Pascoe. Described 

 by C. Ritsema Cz 188. 



Description of a new Sumatran species of the Anthribid genus Xylinades 



Latr. By C. Ritsema Cz 190. 



Three new species of the Brenthid genus Diurus Pascoe. Described by 

 C. Ritsema Cz 310. 



Descrijjtiou d'une espèce nouvelle du genre Atractocerus. Par L. Fair- 



MAIRE 217. 



Colëoptères hétéromères de Sumatra. Décrits par L. Fairmaike . . . 219. 



D I P T E R A. 



Remarks on certain American Diptera in the Leydeu Museum and descrip- 

 tion of nine new species. By F. M. van der Wulp 73. 



CRUST ACKA.. 



On the genus Araeostermis de M. By Dr. J. G. de Man .... 161. 



EJC!HINODER,]VIA.TA. 



List of the Holothurians in the collection of the Ley den Museum. Drawn 



up by Prof. Dr. Hubert Ludwiq 127. 



