CONTENTS. 



I. — Report on the Nemertea collected by H.M.S. Challenger during the years 



1873-1876. 



By Dr. A. A. W. Hubrecht, LL.D., C.M.Z.S., Professor of Zoology in the 



University of Utrecht. 



(The Manuscript ivas received in Instalments between I2t/i October and 



18th November 1886.) 



II. — Report on the Cumacea collected by H.M.S. Challenger during the years 



1873-1876. 



By Professor G. 0. Sars, of the University of Christiania. 



(The Manuscript was received in Instalments between Wth October and 



1 5th December 1886.) 



III.— Report on the Phyllocarida collected by H.M.S. Challenger during the years 



1873-1876. 



By Professor G. 0. Sars, of the University of Christiania. 



(The Manuscript was received 15th January 1887.) 



IV.— Report on the Pteropoda collected by H.M.S. Challenger during the years 



1873-1876.— First Part. 



By Padl Pelseneer, D.Sc (Brussels). 



(The Manuscript ivas received 15th November 1886.) 



