Fig. 1. Ilcdcampa clavus, bisected longitudinally so that the plane of division has 

 opened two intraseptal spaces; twice the natural size. 



Fig. 1, a. Half of the upper end of the body seen from the oral side; tentacles 

 bent inwards ; twice the natural size. 



Fig. 1, h. Upper end of the body with expanded tentacles ; twice the natural size. 



Fig. 2. Eiyizoanthus parasiticus ; natural size. 



Fig. 3. Tealidium cingulatum, in a contracted condition, seen fi-om the upper end 

 of the body ; twice the natural size. 



Fig. 4. Halcampa clavus; natural size. 



Fig. 5. Comactis jlagellifera ; twice the natural size. 



Fig. 6. Scytophorus striatus ; natural size. 



Fig. 7. Stephanactis tuberculata, lateral view; natural size. 



Fig. 7, a. Stephanactis tuberculata, from the oral side ; natural size. 



7, h. Stephanactis tuberculata, lateral portion of the body with the oesophageal 



Fig. 

 groove. 



Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 



8. Ophiodiscus sulcatus ; natural size; greatly restored. 



9. A colony of Epizoanthus jiarasiticus, divided longitudinally ; natural size. 



10. Pedal disk of Halcampa clavus detached and seen from the inside. A, Oc. 1. 



11. A mphianthus bathybiuvi, seen from the surface ; natural size. 

 11, a. Amphianthiis bathybium, a piece of the wall; slightly enlarged. 

 11,6. Amphianthus bathybium, the margins of the pedal disk enclosing the 



Mopsea; slightly enlarged. 



Fig. 11, c. Amjjhianthus bathybium, lateral view ; natural size. 



Fig. 12. Individual of a colony of Epizoanthus, opened longitudinally, and expanded ; 

 twice the natural size. 



