BRYOZOA OF THE PHILIPPINE REGION 



235 



Above each pair two long-stalked fixed avicularia originating, one 

 on each side, from the inferior tubular prolongation of one of the 

 cells immediately above. The gonozooecia resemble in form the 



Fig. 96. — Genus Beania Johnston, 1847 



A-C. Beania mirabilis Johnston, 1847. A. A few zooecia enlarged to show 

 mode of connection, the erect and decumbent portions, the former with margins 

 armed with spines, X50 (after Robertson); con. t, connecting tube; esp., erect 

 spine; br, branch; sep, septum; zoe, zooecia. B. Zoarium natural size. C. 

 Fragment of colony showing the two radical processes and also the diaphragm 

 in the stolon near to the zooecium from which it has risen, X26. The septal 

 division takes place in the stolon very soon after its formation. (B, C. After 

 Waters, 1896.) 



Opercula and mandibles. D. Beania (Diachoris) magellanica Busk, 1852; 

 mandible with double columellae. (After Waters, 1906.) E. Beania {Diachoris) 

 maxilla Jullien, 1888; operculum X76. F. Beania (Diachoris) costata Busk, 

 1852; operculum, X76. (E, F. After Jullien, 1888.) G. Beania (Diachoris) 

 hirtissima Heller; mandible, X85. (After Waters, 1885.) H, I. Beania (Dia- 

 choris) bilaminata Hincks, 1881; mandible and operculum, X85. J. Beania 

 (Diachoris) intermedia Hincks, 1881; mandible, X85. (H-J. After Waters, 1906.) 

 K. Beania erecta Waters, 1903; mandible with double columella, X85. (After 

 Waters.) L, M. Subgenus Diachoris Busk, 1852. Diachoris magellanica Busk, 

 1859, frontal and dorsal faces. (After Busk.) 



ordinary zooecia, but twice as large and without ovicell (gigantic 

 cells of Hincks); 10 tentacles. 



Genotype. — Epistomia (Sertvlaria) bursaria Linnaeus, 1758. Recent. 



