()6 GUIDE TO THE CORAL GALLERY. 



Case 3, capacious gullet animals that at first sight appear bigger than 

 Upright part. i(-gg|f_ 



The Ctenophora are now usually regarded as a distinct class of 

 Coelentera. 



Classification of Hydrozoa. 

 (From Prof. Lankester's Article Hydrozoa, Encyclopce.dia Britannica.) 



Class Hydrozoa. 



Sub-class Hydromedusae Sub-class Scyphomednsee 



I I i I II 



Orders Gyranoblastea Calyptoblastea Trachomedusse. Narcomedusaj. Hydrocorallinae. Siphonophora. 

 or Athecata. or Tbecaphora. 



[The Coelentera have been divided, in the various recent classifi- 

 cations, into two classes, Hydrozoa and Anthozoa ; into three, 

 Hydrozoa, Anthozoa, and Ctenophora ; or, again, into four, 

 Hydrozoa, Scyphozoa, Anthozoa, and Ctenophora.] 



