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

 opened two intraseptal spaces; twice the natural size. 



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

 bent inwards ; twice the natural size. 



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



Fig. 2. Eplzoanthus parasiticus ; natural size. 



Fig. 3. Tealidium cingulatum, in a contracted condition, seen from the upper end 

 of the body ; twice the natural size. 



Fig. 4. Halcampa clavus ; natural size. 



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

 Scytophorus striatus; natural size. 

 Stephanactis tuberculata, lateral view ; natural size. 



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



b. Stephanactis tuberculata, lateral portion of the body with the oesophageal 



Fig. 



Fig. 



Fig- 

 Fig. 



groove. 



Fig. 



Fig. 



Fig 



Fig. 



6. 



7. 

 7, 

 7, 



8. Ophiodiscus sulcatus ; natural size; greatly restored. 



9. A colony of Eplzoanthus parasiticus, divided longitudinally ; natural size. 



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



11. Amphianthus bathybium, seen from the surface; natural size. 

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



Fig. 11, b. Amphianthus bathybium, the margins of the pedal disk enclosing the 

 Mopsea; slightly enlarged. 



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



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

 twice the natural size. 



