66 
GUIDE TO THE CORAL GALLERY. 
Case 3, capacious gullet animals tliat at first sight appear bigger than 
Upright part. 
The Ctenophora are now usually regarded as a distinct class of 
Coelentera. 
Classification of Hydrozoa. 
(From Prof. Lankester’s Article Hydrozoa, Encyclopedia Britannica.) 
Class Hydrozoa. 
! 
Sub -cl ass Hydromedusse Sub-class Scyphomedusae 
Orders Gymnoblastea Calyptoblastea Trachomedusae. Narcomedusaj. Hydrocorallinag. Siphonophora. 
or Athecata. or Thecaphora. 
[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.] 
