CONTENTS OF VOL. IX. VII 



MOLLXJSCA. 



Page 



Die van Hasselt'schen Nudibranchien. Von Dr. R. Bergh (Tafel 6). . . 303. 



VERMES. 



Descriptions of Earthworms. By Dr. R. Horst. I. (Plate 1) 97. 



Descriptions of Earthworms. By Dr. R. Horst. II. (Plate 4) . . . . 247. 



Descriptions of Earthworms. By Dr. R. Horst. III. (Plate 5) . . . . 291. 



