TABLE SHOWING THE CLASSIFICATION OF THE ACTINOZOA 
DESCRIBED IN THIS CHAPTER 
Class 
ACTINOZOA 
Subclass 
Zoantharia 
(Mesenteries numerous, usually in multiples of six ; tentacles unbranched hollow cones) 
Orders Genera Species 
Metridium M. marginatum 
ACTINIABIA ; 9 
Rhodactinia R. davidsii 
(The = sea-anemones. z 
ingles noakeistn) Holocampa Hi. producta 
Sagartia S. leucolena 
Oculina 
Astrea 
ea oe Meandrina 
e stone- or reef-cor- ; Mf . Py 
als. Colonies ; skele- EEOPES Ds Cenenntys ee 
ton calcareous) Madrepora {oe cervicornis 
M. palmata 
Astrangia A, danaé 
ANTIPATHARIA 
( The black corals) 
Subclass 
Alcyonaria or Halcyonoida 
(Tentacles and mesenteries eight in number ; tentacles feathered, that_is, with uniform 
branches) 
ALCYONACEA Alcyonium A. palmatum 
Tubipora 
GORGONACEA 
(The sea-fans and sea- 
whips. Compound, 
tree-like colonies, with 
horny axis, branching 
throughout) 
PENNATULACEA 
(Free, phosphorescent; 
colonies, with horny 
axis; polyps in lat- 
eral branches) 
Pennatula 
141 
