TABLE SHOWING THE CLASSIFICATION OF THE HYDROZOA 
DESCRIBED IN THIS CHAPTER 
Class 
HYDROZOA 
Order LEPTOLINLE 
(Branched colonies or shrub-like communities of hydroids ; some permanently fixed, 
others liberate swimming-bells) 
Suborders Divisions Genera and Species 
Clava leptostyla 
Hydractinia polyclina 
Coryne mirabilis 
Sarsia 
ANTHOMEDUSE Eudendrium ramosum 
(Zovids not covered by Tubularia indivisa 
protective sheath ; um- TUBULARIANS T. Couthouyi 
brella of medusee strong- (Without polyp-cups) 
ly arched ; egg-sacs in Paryp. ha crocea 
manubrium) Corymorpha pendula 
Hybocodon prolifer 
Pennaria tiarella 
P. gibbosa 
Bougainvilleasuperciliaris 
Eucope diaphana 
CAMPANULARIAN ° pa 
wa = a 5 S < Oceania languiaa 
‘olyp-cups stalked) : . 
on Clytia poteriam 
C. bicophora 
Zobids covered with eup- Bs 
: SERTULARIANS Sertularia pumila 
like sheaths; umbrella 
of meduse thin and not 
very convex ; egg-sacs in 
S. argentea 
(Polyp-cups sessile) c 
S. cupressina 
| Obelia commissuralis 
line of radial canals) PLUMULARIANS te ios 
(Pilon Hinsenoincie if pele hai ee 
of branches only) ( UMUALIA fe alcata 
Family 
GERYONOPSIDE Tima formosa 
Family 
EQUOREIDE Zygodactyla groenlandica 
116 
