LIST OF ILLTJSTKATIONS. 



FIG. 



1. Diagram representing Transverse Sections of tlie Invertehrata and 



V&rtebrata^ . , 



2. Gregarina of the Earth-worm, 



3. Morphology of BMzopoda, 



4. Morphology of Foraminifera, 



5. NumnmlUes lavigatus, 



6. Acanthometra and lialwmma, 

 1. Morphology of Thalaasicollida, . 



8, Diagrammatic Section of Fresh- -water Sponge, 



9. Morphology and Eeproduction of Spongida, 

 Paramoecmm, ..... 

 Vaginicola, Stentor^ and Vorticella, 

 Diagram of Sea-anemone, 

 Morphology of Uydrozoa, 

 Tuhilaria indivisa, .... 

 Morphology of Corynida, 

 Eeproduotive Processes of Sydrozoa, 

 Morphology of Sertularida, 

 Gonophore of one of the Gampanularida, 

 Diphyes appenddculata, 

 Portuguese Man-of-"War and Velella, 

 Naked-eyed Medusa!, 



Lucernaria auricula^ .... 

 Development of Zwcernarida, 

 Generative Zooid of one of the I/ucernarida, 

 Transverse Sections of Actinozoa and Eydrozoa 

 Morphology of Actinidce, 

 Structure of Coral-reefs, .... 



28. Pennatula fhosphorea, 



29. Morphology of Corals, .... 



30. Fleurolfrachia pileus, .... 



31. Morphology of JEcMnoidea, 

 32. 



10. 

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16 

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91 

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