Vlll CONTENTS. 



Page 

 LII. On the Production of similar Gonozooids by Hydroid Polypes 

 belonging to different Genera. By the Rev. Thomas Hincks, B.A. 

 (Plate IX. figs. 1 & 2.) 459 



New Book .• — Memoir of the Rev. John Stevens Henslow, M.A., by 



the Rev. Leonard Jenyns, M.A 461 



Proceedings of the Zoological Society 464 — 472 



Remarks in reference to the Gracula pectoralis of Mr. Wallace, and 

 Note on the Otothrix Hodgsoni, by G. R. Gray; On the Gorilla, 

 by Thomas J. Moore ; Note on Pleuronectes sinensis, Lacep., by 

 Dr. A. Giinther ; Note on the Size of a Seal at the time of birth, 

 by Dr. J. E. Gray, F.R.S. &c 472—475 



Index 476 



PLATES IN VOL. X. 



Plate I. New Species of Entomostracous Crustacea. 



II. Lernseodiscus Porcellanse. — Sacculina purpurea. — Entoniscus 

 Porcellanse. 



III. Conjugation in the Infusoria. 



IV. Carboniferous and Permian Fossils. 



V. Xanthoxylum Danielli. 



VI.l 

 Yjt' r Fossil remains of Einys lutaria. 



VIII. Cyphagogus Mouhotii. — Pterygoid teeth of Trachinus draco. 

 IX. Gonozooids of Hydroid Polypes. — New British Zoophytes. 



