CONTENTS OF VOL. XV. 
MOLLUSCA. 
Two supposed new species of Pentadactylus. Described by M. M. Schepman. 
On a collection of Shells from the Moluccas. By M. M. Schepman. (Plate 3). 
Description of a new species of Dolium. By M. M. Schepman. 
VERMES. 
On the habits of Thalassina anomala Herbst. By Dr. R. Horst. . 
Description of Barthworms. By Dr. R. Horst. VII. On Mayalan Harthworms. 
(Plate 10). . 
VII 
Page 
103. 
147. 
276. 
314. 
316. 
