92 



BIOLOGICAL EELATIONS. 



(3) 

 (4) 



Class II — Actinozoa. 



Alcyonaria. PennatulidsB.* 



Gorgonidi».* 



Tubiporidse — 



Syringopora, Salysites, Aulopora. 



Helioporidse.* 

 ZOANTHARIA. Cyathophyllidse — 



Cyathopliyllum, LWiostrotion. 



Heliophyllidse — Phillip sastrea. 



Cliotophyllidi© — Axophyllum. 



Zaphrentidse — 



Amplexus, Zaphrentis, Lophophyllum. 



Streptalasmidse — Streptalastna. 



Oystophyllidse — Cystophylhim. 



Calciolidae.* 



Poritidse — 



Favosites, PalceaciSj Striatopora. 



Madreporidse.* 



Pocilloporidse.* 



Eupsammidse.* 



Fungidse.* 



Astrseidse.* 



Stylophoridse.* 



Oculinidse.* 



Dasmidse.* 



Turbinolidse.* 



MONTICULIPOROIDEA. Monticuliporidne. 



Fistuliporidse — Fistulipora. 

 Ctenophora.* 



Snbkingdom IV.— ECHINODERMATA. 

 Class I. — Holothuroidea.* 



Class II. — Ophiuroidea. 



(1) Euryalida. ^nryalidse—Onychaster. 



(2) Ophiurida.* 



