BKVOZOA OF THE PHILIPPINE REGION 



459 







it 





Fig. 190. — Genus Systenopora Waters, 1904 



A-N. Systenopora contracta Waters, 1904. A. Part of a zoarium, X25, 20 

 tentacles. B. Natural size. C. Mandible of the oral avicularium, X 85. D, E. 

 Mandibles of zooecial avicularium, X85. F. Mandible of the internal avicula- 

 rium, X85. G. Transverse calcareous section, X 12. II. Transverse calcareous 

 on of a zooecium showing the multiporous septula, over which then- is the 

 pair of irregular processes, X25. I. The processes more magnified. J. The 

 interior as seen in thick section, prepared in order to show the interior triangular 

 avicularia l>y the side of the aperture. The ovicells are also seen; X25. K. 

 Section showing the oral aperture with the interior avicularium iav) external one 

 (ex) and ovicell (o); X25. L. Decalcified sections cut through the shorter axis 



