IV CONTENTS. 



CONTENTS OE No. CXXXV, N.S., JANUARY, 1893. 



MEMOIRS : page 



On tbe Kelatiousliips and Role of the Archoplasm during Mitosis 

 in the Larval Salamander. By John E. S. Mooee, A.R.C.S. 

 (From the Huxley Research Laboratory, Royal College of Science, 

 Loudon.) (With Plate XXI) 181 



On the Occurrence of Embryonic Fission in Cyclostomatous Polyzoa. 

 By Sidney F. Harmek, M.A., B.Sc, Fellow of King's College, 

 Cambridge, and Superintendent of the University Museum of 

 Zoology. (With Plates XXII, XXIII & XXIV) . . 199 



Two New Genera and some New Species of Earthworms. By 

 Frank E. Bedbard, M.A., F.R.S., Prosector to the Zoological 

 Society of London. (With Plates XXV & XXVI) . . 243 



Observations on the Gregarines of Holothurians. By E. A. 

 MiNCHiN, B.A., Assistant to the Linacre Professor of Human 

 and Comparative Anatomy, Oxford. (With Plates XXVII & 

 XXVIII) 279 



A New Sporozoon in Amphioxus. By E. C. Pollard, B.Sc. 

 (With Plate XXIX) 311 



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

 Columbia College, New York. (With Plates XXX & XXXI) . 317 



CONTENTS OF No. CXXXVI, N.S., APRIL, 1893. 



MEMOIRS : 



Description of a New Species of Moniligaster from India. By 

 W. Blaxland Benham, D.Sc.Lond., Aldrichian Demonstrator 

 of Comparative Anatomy in the University of Oxford. With 

 Plate XXXII) 361 



Note on a New Species of the Genus Nais. By W. Blaxland 

 Benham, D.Sc.Lond., Aldrichian Demonstrator of Comparative 

 Anatomy in the University of Oxford. (With Plate XXXIII) . 383 



On a New Organ in the Lycoridea, and on the Nephridium in 

 Nereis diversicolor, O. F. Miill. By E. S. Goodrich, 

 F.L.S., Asssistant to the Linacre Professor of Human and Com- 

 parative Anatomy, Oxford. (With Plates XXXIV & XXXV) . 387 



