Fio. 486. Stephalia corona, a young colony. (After Haeckel.) 



p. 



FIG. 48c. Stephalia corona, colony in section. (After Haeckel.) ao, mouth of the primary 

 gastrozooid, the cavity of which is continuous with the axial canal (ca) and the canal plexus 

 (oc) of the colony. The large pneumatophore (p) is surrounded by a ring of nectophores (TI), 

 from among which projects the large aurophore (1). The opening of the aurophore (lo) leads 

 through the pistillum (Im) into the cavity of the pneumatophore ; (s), secondary gastrozooids 

 with (<) tentacles. 



