VI CONTENTS OF VOL. XIII, 



Page 

 Poli/ctesis igorrota , nova species Rii[)r('stiilarum By K. M. ITellor .... 159. 



Contributions to the knowledge of the family Brenthidae. By Dr. A. Senna. VI. 161. 



Genre nonveaii et espèccs noiivelles du groupe des Oxyopisfhen. Decrits par 



W. Roelofs ') 167. 



On the Ceylon Cetoniidae collected by J. Z. Kannegieter. By J. R. H. Neer- 



voort van de Poll and J. Z. Kannegieter 181. 



Synonymical remarks on Cetoniidae. By J. R. H. Neervoort van de Poll . 188. 



A new species of the Longicorn genus Neopkarsalia v. d. Poll. By J. Z. Kan- 

 negieter 189 



Quatre espèces nouvelles de Gyrinide.s du genre Oreciogyrus. Decrites par M. 



Regirabart 191. 



Synonymical remark about Cetonia bifida Oliv. By J. Z. Kannegieter . . . 196. 



Two new species of the genus Helota from Borneo. Described by C. Ritsema Cz. 197. 



Synopsis and alphabetical list of the described species of the genus Helota Mc. 



L. By C. Ritsema Cz 223. 



Two new species of the Lucanoid genus Cyclommatus Parry. Described by C. 



Ritsema Cz. (Plate 10, fig. 1) 233. 



Description de neuf Elatérides nouveaux du Musee de Leyde. Par E. Candêze 243. 



A new oriental species of the Coleopterous genus Chelonarium. Described by 



C. Ritsema Cz 249. 



Further contributions to the knowledge of the S^eZo^A-species of Burma. By 



C. Ritsema Cz 251. 



LEPIDOPTERA. 



List of the Lepidopterous insects collected by Mr. A. G. Vorderman in the 



island of Billiton. By P. C. T. Snellen 131. 



Lomofropa vellerialis, nouvelle espèce de Pyralide. Décrite par P. C. T. Snellen. ') 239. 

 CRUSTACEA.. 



Carcinological studies in the Leyden Museum. By Dr. J. G. de Man. n°. 5. 



(Plate "l— 4) 1. 



MOLLXJSCA. 



Description of a new species of Fusus from Japan. By M. M. Schepman. (Plate 



9, fig. 3) 62. 



On a new species of Lanistes. By M. M. Schepman. (Plate 8, figs. I and 2). 111. 



A new species of TJnio. Described by M. M. Schepman. (Plate 8, fig. 3). . . 113. 



On three Eastern Mollusks. P.y M. M. Schepman. (Plate 9) 155. 



A new species of Latirus. Described by I. C. Melvill 158. 



VERIMES. 



Descriptions of Earthworms. By Dr. R. Horst. VI. (Plate 6) 77. 



1) On p. 167, line 12 (from l)ottom), there is erroneously printed 0. scalnris Roel. in stead of 

 0. sutnrale Roel. (see p. 170). 



2) Erratum: p. 239, line 4 (from bottom), for "marques de taches" read "marque de taches." 



