CONTENTS. 
On Some Points in the Anatomy of Polyxenus lagurus. By 
F.G. Heatucors, M.A., Fellow of the ae ee Philosophical 
Society. (With Plate VII) 
A Remarkable Crustacean Parasite, and its Bearing on the Phylo- 
geny of the Entomostraca. By G. Hersertr Fowtsr, B.A., 
Pu.D., Assistant to the Jodrell Professor of Zoology, University 
College, London. (With Plate VIII) 
Notes on the Anatomy of Scorpions.—I. External Sexual Charac- 
ters. By Muztyin Narayanan, B.A. (Madras). From the 
Biological Laboratory, od eee Madras. (With Plate 
IX) ‘ : : 
The Anatomy of Phoronis Australis. By Witt1am Braxtanp 
Benuam, D.Sc., Demonstrator in the Zoological Laboratory of 
University College, London. (With Plates X, XI, XII, and 
XITI) ; ‘ : 
Karyokinesis and its Relation to the Process of Fertilization. 
By W. WatpEyer. (With Plate XIV) 
PAGE 
97 
107 
121 
125 
159 
CONTENTS OF No. CXIX, N.S., DECEMBER, 1889. 
MEMOIRS : 
Karyokinesis and its Relation to the Process of Fertilization.— Part 
II. By W. Watpryer. (With Plate XIV) 
Studies in Mammalian Embryology—I. The Placentation of 
Erinaceus Europeus, with Remarks on the Phylogeny of 
the Placenta. By A. A. W. Hvusrecut, LL.D., C.M.ZS., 
Professor of Zoology in the University of Utrecht. (With 
Plates XV to XXVII) . : : 
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