IV. CONTENTS. 



Observations on the Tube-Forming Habits of Pan- 



thalis oerstedi. By Aenold T. "Watson. . 169 



Observations upon the Pollen Tube. By A. J. 



Ewakt, B.Sc. 189 



Notes on a Collection of Sponges from the "West 



Coast ol Portugal. By K. Hanitsch, Ph.D. 205 



Notes on some points in the Structure of the Cerata 

 of -Dendronotus arhorescens. By Joseph A. 

 ■ Chubb, B.Scv (Vict.) • . ■ . . . .220 



Notes oh some Specimens oi'Syndpta inhcerens from 



Port Erin. By Hebbeet C. Chad wick . 235 



Beport on the Medusae of the L.M.B.C. District. 



By Edwaed T. Bbowne, B.A. . . . 243 



Eevision of the Amphipoda of the L.M.B.C. District. 



By Alfeed 0. Walkee, E.L.S. . . . 287 



A New Theory of Hearing. By C. Hebbeet Huest, 



Ph.D 321 



Beport on Nemertines observed at Port Erin in 1894 



and 1895. By W. I. Beaumont, B.A. . . 354 



