Xll CONTENTS. 



CHAPTER VI. 



Infusoria Order Ciliata Suctoria Flagellata Noctiluca Phos- 

 phorescence of the sea Literature of Protozoa, . . . 94-104 



CHAPTER VII. 



General characters of the Coelenterata Divisions of the Coelenterata 



Hydrozoa General terminology of the Hydrozoa, . . 105-111 



CHAPTER VIII. 



Divisions of the Hydrozoa Sub-class Hydroida Order Hydrida 

 Order Corynida Reproduction of Hydroida Sertularida Cam- 

 panularida Thecomedusse Medusidoe, . . . . 111-131 



CHAPTER IX. 



Siphonophora or Oceanic Hydrozoa Calycophoridae Divisions of 



Calycophoridae Physophoridae Divisions of Physophoridre, 131-136 



CHAPTER X. 



Lucernarida Steganophthalmate Medusae Lucernariadoe Pelagidp? 



Rhizostomidae Reproduction in Rhizostomidae Sub- class 

 Graptolitidse Definition of the sub-class Structure of Grapto- 

 lites Sub-class Hydrocorallinse Millepora Stylasteridoe, 137-149 



CHAPTER XI. 



Distribution of Hydrozoa in space Distribution of Hydrozoa in time 

 Oldhamia Corynida Sertularida Graptolites Hydrocoral- 

 lin*, . . . , , . . . . \ .. . . I49-I5I 



CHAPTER XII. 



General characters of the Actinozoa Zoantharia Malacodermata 

 Actinidae Ily anthidse Zoanthidae Zoantharia Sclerobasica 

 Sclerobasic and Sclerodermic Corals Antipathidae Zoantharia 

 Sclerodermata Gemmation and fission amongst Corals 

 Divisions of Zoantharia Sclerodermata, .... 151-165 



CHAPTER XIII. 



Alcyonaria Alcyonidae Tubiporidse Pennatuliclae Gorgonidae 

 Red Coral Helioporidae, . ,,' . ,' ..... '.',, . . 165-172 



CHAPTER XIV. 



Rugosa Operculate Corals Families of Rugosa, . . . . 173-175 



CHAPTER XV. 



Ctenophora General characters Anatomy of Pleurobrachia Divi- 

 sions of Ctenophora, . . . . . . . .176-180 



CHAPTER XVI. 



Distribution of Actinozoa in space Coral-reefs, their structure, and 

 mode of origin Distribution of Actinozoa in time Literature of 

 Coelenterata, 180-189 



CHAPTER XVII. 



Echinodermata General characters of the Echinodermata Develop- 

 ment of the Echinodermata Divisions of Echinodermata, . 190-193 



