Fig. 1. Polyps of Antipathes dichotoma, Pallas, 

 Fig. 2. Two polyps of Parantipathes larix (Esper), 



Diam. 



Figs. 3-8. Antipathella subpinnata (E. & S.). 



Fig. 3. Polyps, showing the mouth contracted, .... 



Three polyps with the mouth widely open, showing the crenate 

 inner margin and the elongate stomodseum beneath, 



Vertical longitudinal section of a polyp passing through a portion of 

 the skeletal sheath, ..... 



Sagittal section of a polyp passing through the extreme elongation 

 of the stomodreum, ...... 



Fig. 7. Subhorizontal section passing through the middle of the stomodseum, 



Fig. 8. 



Longitudinal section of a portion of the wall of the tentacle (borax- 

 carmine preparation), ...... 



x 



X 



75 



75 

 75 



340 



Fig. 9. 



Fig. 10. 



Antipathes dichotoma, Pallas. Longitudinal section of the ectoderm 

 of a tentacle passing through the middle of the papillse (borax- 

 carmine preparation), . . . . . x 330 



Antipathella subpinnata (E. & S.). Vertical section of the wall of 



the stomodseum (borax-carmine preparation), . . x 700 



