December 7, 1920. Price Us. 



THE JOURNAL 



OF 



THE LINNEAN SOCIETY. 



Vol. XXXIV. ZOOLOGY. No. 228. 



CONTENTS. 



Pagfr 

 I. The Germ-Cells, Fertilization, and Early Development of Grantia 

 (Sycon) compressa. By J. Bronte Gatexby, B.A., B.Sc, 

 D.Phil., Senior Demy, Magdalen College ; Senior Assistant 

 in Zoology, Lecturer in Cytology, University College, London. 

 (Communicated by Prof. E. S. Goodrich, F.R.S., Sec.L.S.) 

 (Plates 19-23; and 4 Text-figures.) 261 



II. The Fragrance of Calcinean Sponges and the Spermatozoa of 

 Gnancha coriacea and Sycon raplianus. By G. P. Bidder, 

 Sc.D.,F.L.S. (Plate 24.) 299 



III. Syncrypta spongiarum, nova. By the same ("with Text-figures) ... 305 



IV. Notes on the Physiology of Sponges. By the same (with Text- 



figures) 315 



V. On certain Nuclear Phenomena in the Oocytes of the Gall-fly 

 Neuroterus. By Lancelot T. Hogben, B.A., B.Sc. (formerly 

 Frank Smart Prizeman in Zoology, Cambridge). (Communi- 

 cated by Dr. E. Drabble, F.L.S.) (With 2 Text-figures.) ... 327 



VI. Notes upon the Reproduction of Asellus aquaticus. By Ernest 

 E. Unwin, M.Sc. (Leeds). (Communicated by the Rev. T. R. 

 R. Stebbing, M.A., F.R.S., F.L.S. (Plates 25, 26.) 335 



LONDON: 



SOLD AT THE SOCIETY'S APARTMENTS, BURLINGTON HOUSJk , -i^y 

 PICCADILLY, "W.l, 



and by JAW 1 3 1920 



LONGMANS, GREEN, AND CO., 



AND * c *ouai M«» tt * 



WILLIAMS AND NORGATE. 



1920 



