CONTENTS. 



PAGE 



The Opisthobranchiata of South Africa. By E. Bergh 1 



A New Species of Planocera (P. Gilchristi) from South 



Africa. By Lydia Jacubowa 145 



New Forms of the Hemichordata from South Africa 

 By J. D. F. Gilchrist 



On a Parasitic Copepod from Cephalodiscus. By W. T 

 Calman ......... 



151 



177 



On the Genus Botellina (Carpenter), with a Description 



of a New Species. By F. Gordon Pearcey . . 185 



