hp/v 



Fig. 11J>. — Halistemma tergestinum. A, the entire colony; B, a single group of zooids. 

 ecu. ccenosarc ; dz. dactylozooid ; hph. hydrophyllium or bract ; net. nectocalyx or swiniming- 

 bell; ntc. battery of nematocysts ; p. polype; pn. pneumatophore or float; s, s\ sporocysts ; 

 t. tentacle. (After Glaus.) 



