344 



COELENTERATA ANTHOZOA 



viridis of the East Indian reefs (Fig. 153). Other fossil forms 

 belonging to the order are Favosites, a very abundant coral of 

 the Upper Silurian rocks, and possibly Columnaria. 



Fig. 152. Syringopora, a fossil, Fig. 153. Clavularia (Hicksonia) viridis, with 



showing autothecalous tubes (th), creeping stolon and transverse connecting 



funnel-shaped tabulae {tab), and tubes, 

 tubular cross-bars (t). 



The principal families of the Stolonifera are : 



Fam. 1. Cornulariidae. Without spicules; Comularia, Lamarck, 



Mediterranean ; Stereosoma, Hickson, Celebes. 

 Fam. 2. Clavulariidae. Clavularia, Quoy and Gaimard ; Sarco- 



dictyon, Forbes, British ; Sympodium, Ehrb ; Syringopora, 



Goldfuss, fossil. 

 Fam. 3. Tubiporidae. Tubipora, Linnaeus, tropical shallow water. 

 Fam. 4. Favositidae. Favosites, Lamarck ; Syringolites, Hinde ; 



Stenopora, King. 



Order II. Coenothecalia. 



This order contains the single genus and species Heliopora 

 coerulea among recent corals, but was probably represented by a 

 large number of genera and species in earlier periods. 



