CONTENTS. 



Report on the Siphonophor^e collected by H.M.S. Challenger during the 



years 1873-1876. 



By Ernst Haeckel, M.D., Ph.D., Hon. F.R.S.E., &c, Professor of Zoology 



in the University of Jena. 



(Tlie Manuscript was received in Instalments between 8th February and 



5th July 1888.) 



