CONTENTS OF No. 154.-New Series. 



MEMOIRS : 



PAGE 



Letters from New Guinea on Nautilus and some other Organisms. 

 By Akthuk Willey, D.Sc. ..... 145 



Tlie Brain of a Foetal Ornithorhynclius. Part I. — Tlie Fore-brain. 

 By G. Elliot Smith, M.D., Ch.M., Demonstrator of Anatomy, 

 University of Sydney, N.S.W. (With Plate 11) . . . 181 



On Arhynch»s hemignathi, a New Genus of Acanthoeephala. By 

 Akthuk E. Shipley, Fellow and Tutor of Christ's College, Cani- 

 bridge, and University Lecturer in the Advanced Morphology of 

 the Invertebrata. (With Plate 12) . . . . . 207 



Zoological Observations in the South Pacific. By Arthur Willey, 

 D.Sc.Loud., Balfour Student of the University of Cambridge. (With 

 Plate 13) . . . . . . .219 



Chlamydomyxa moutana, n. sp., one of the Protozoa Gynino- 

 myxa. By E. Ray L.vnkester, M.A., LL.D., F.R.S., Linacre 

 Professor in the University of Oxford. (With Plates 14 and 15) . 233 



