1V CONTENTS. 
CONTENTS OF No. 207, N.S., JUNE, 1908. 
MEMOIRS: 
Materials for a Monograph of the Ascons. IJ.—The Formation 
of Spicules in the Genus Leucosolenia, with some Notes 
on the Histology of the Sponges. By EH. A. Mincuty, M.A., 
Professor of Protozoology in the University of London. (With 
Plates 17—21, and 5 Text-figures) 
On Meerisia lyonsi, a New Hydromedusan ftom Take Quran 
By Cuarzes L. Boutencer, B.A., King’s College, Cambridge. 
(With Plates 22 and 23) ; 
The Distribution and Classification of ie Onyehoplons By 
PAGE 
301 
Apam Sxrpewick, Professor of Zoology and Comparative Ana- . 
tomy in the University of Cambridge. (With 13 Figures) 
A few Observations on the Eneystation of Actinospherium 
eichhorni under different conditions cf Temperature. By 
Doris L. Mackinnon, B.Sc., Carnegie Scholar, 1906-1907. 
(With Plate 24 and 1 Text-figure) ‘ 3 : ‘ 
On Archerina, Golenkinia, and Botryococcus. By Sir Ray Lan- 
KESTER, K.C.B., F.R.S. (With Plate 25) 
CONTENTS OF No. 208, N.S., OCTOBER, 1908. 
MEMOIRS: 
The Yellow-Brown Cells of Convoluta paradoxa. By Fru- 
423 
DERICK Krrsir, Sc.D., Dean of the Faculty of Science and . 
Professor of Botany in University College, Reading. (With 
Plates 26—28, and 3 Text-figures) 
On the Diplochorda. By A. T. MastERMan, M. ns D.Sc. Bani v. 
(With Plate 29) . 
The Structure, Development, an Bionenties oF the Housente 
Musca domestica, Linn. Part I1.—The Breeding Habits, 
Development, and the Anatomy of the Larva. By C. Gorpon 
Hewitt, M.Sce., Lecturer in Economic Zoology, University of 
Manchester. (With Plates 30—33) 
Tite, INDEX, AND CONTENTS. 
431 
481 
495 
