IV CONTENTS. 



PAGE 



Some Points iu the Origin of the Reproductive Elements in Apus 

 and Branchipus. By J. E. S. Moore, A.R.C.S., from tlie Huxley 

 Research Laboratory, Royal College of Science, London. (With 

 Plates 15 and 16) . . . . . . 259 



Notes on the Peripatus of Dominica. By E. C. Pollard, 

 B.Sc.Lond. (With Plate 17) 285 



Studies on the Protochordata. By Arthur Willey, B.Sc.Lond., 

 Columbia College, New York. (With Plates 18— 20) . . 295 



CONTENTS OF No. 139, N.S., JANUARY, 1894. 



MEMOIRS : 



Observations on the Development of the Head iu Gobius capito. 

 By H. B. Pollard, Oxford. (With Plates 21 and 22) . . 335 



On the Head Kidney of Myxine. By J. W. Kirkaldy, Somerville 

 Hall, Oxford. (With Plate 23) . . . .353 



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

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

 B.Sc.Lond. ....... 361 



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

 Associate 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. 

 Goodrich, F.L.S., Assistant to the Linacre Professor of Com- 

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



A Polynoid with Branchiae (E up olyodontes Cornishii). By 

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



On some Bipinnarise from the English Channel. By Walter 

 Garstang, 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 



