Classification of Animals 



287 



[3. Cyania 



3. Order Siphonophora, f i. Physophorae, Agalma 

 with polymorphic j 2. Physaliae, Physalia 

 persons j 3. Calycophora, Diphyes 



4. Discoideae, Velella 



2. Class Actinozoa, 

 radiate animals 

 such as corals 

 and sea-anem- 

 ones 



i. Order Zoantharia \ 2 ' S ora J' 



i. Sea-anemone, Actinia 



. Coral, Astrangia 



. i. Order Eurystomeae j ^* 



3. Class Ctenophora, transparent 

 walnut-shaped animals 



2. Order Saccatae, Pleurobranchia 



3. Order Taeniata, Cesium 



4. Order Lobatae, Bolina 



ORDERS AND SOME GENERA OF SPONGES. 



i. Order Carneospongiae, 

 m/^ flexible, horny 

 framework of fibers 



2. Marine sponge 



(i. Chalinu 

 2. Spongia 

 3. Axinella 



3. Venus flower-basket, Euplectettum 

 t . Order Calcispongiae, wft/t calcareous spiculesSycon 



