CONTENTS OF No. 139.— New Series. 



MEMOIRS: 



Observations on the Development of the Head in Gobius capito. 

 By H. B. Pollard, Oxford. (With Plates 21 and 22) 



On the Head Kidney of Myxine. By J. W. Kirk alp y, Somerville 

 Hall, Oxford. (With Plate 23) . 



Report on a Collection of Amphioxus made by Professor A. C. 

 Haddon in Torres Straits, 1888-9. By Arthur Willey, 

 B.Sc.Lond. ........ 



PAGE 



335 



353 



361 



The Orientation of the Frog's Egg. By T. H. Morgan, Ph.D., As- 

 sociate Professor of Biology, Bryn Mawr College; and Ume Tsuda, 

 Teacher in the Peeress' School, Tokio, Japan. (With Plates 24 

 and 25) 373 



On the Fossil Mammalia from the Stonesfield Slate. By E. S. Good- 

 rich, F.L.S., Assistant to the Linacre Professor of Comparative 

 Anatomy, Oxford. (With Plate 26) . . . .407 



A Polynoid with Branchiae (Eupolyodontes Cornishii). By 

 Florence Buchanan, B.Sc. (With Plate 27) , . . 433 



On some Bipinnarise from the English Channel. By Walter Gar- 

 stang, M.A., Fellow of Lincoln College, Oxford, Naturalist to the 

 Marine Biological Association. (With Plate 28) . . . 451 



Octineon Lindahli (W. B. Carpenter) : an Undescribed Antho- 

 zoon of Novel Structure. By G. Herbert Fowler, B.A., Ph.D., 

 Demonstrator in Zoology, University College, London. (With 

 Plates 29 and 30) . . . . . . . 461 





