CONTENTS. 



CONTENTS OF No. 185, N.S., MAY, 1903. 

 MEMOIRS: 



PACK 



The Genera and Species of the Order Sjmphvla. By H. J. Hansen 

 (Copenhagen). (With Plates 1—7) .... 1 



On the Body-cavities and Nephridia of the Actinotrocha Larva. 

 By Edwin S. Goodkich, M.A., Fellow of Merton College, 

 Oxford. (With Plates 8 and 9) .... 103 



Enteropneusta from Madras. By K. Hamunni Menon, Assistant 

 Professor, Presidency College, Madras. (With Plate 10) .123 



On Planktonetta atlaiitica, Borget. By G. Hekbert 

 EowLEK, B.A., Ph.D., F.Z.S. (With Plates 11 and 12)' . 133 



CONTENTS OF No. 186, N.S., JULY, 1903. 



MEMOIRS : 



On Peripatus guiauensis (sp. nov.). By Richard Evans, 

 M.A., D.Sc.(Oxon.), Curator of the Mviseum, Georgetown, 

 British Guiana. (With Plates 13 and 14) . . . 11.5 



Observations on Ovarian Ova and Follicles in Certain Teleostean 

 and Elasmobraneh Fishes. By William Wallace, B.Sc. (With 

 Plates 15—17) ....... IGl 



A New Koenenia from Texas. By Augusta Ruckek, of the Uni- 

 versity of Texas, U.S.A. (With Plate 18) . . . 21.5 



Oligotrema psammites : a New Ascidian belonging to the Family 

 Molgulidse. By Gilbert C. Bourne, D.Sc, F.L.S., Fellow and 

 Tutor of New College, Oxford ; University Lecturer in Compara- 

 tive Anatomy. (With Plates 19—23) . . .233 



