CONTENTS OF No. 155.-New Series. 



MEMOIRS 



The Constitution and Development of the Society of Termites : Ob- 

 servations on tlieir Habits ; with Appendices on the Parasitic 

 Protozoa of Termitic a?, and on the Enibiidse. By Professor B. 

 Gkassi in collaboration with Dr. A. Sandias. (With Plates 16 

 — 20} {to be continued) ...... 245 



On Ctenoplana. By Arthuii Willey, D.Sc. (With Plate 21) . 323 



An Attempt to deduce the Yertebrate Eyes from the Skin. By H. 

 M. Bernakd, M.A.Cantab., F.L.S. (With Plate 22) . . 343 



The Reproduction and Metamorphosis of the Common Eel (Anguilla 

 vulgaris). By Professor Giussi ..... 371 



