BRYOZOA OF THE PHILIPPINE REGION 



169 



Fig. 46. — Genus Alysidium Busk, 1852 



A-O. Alysidium parasilicum Busk, 1852. A. A gonozooecium with a 

 double-valved ovicell is seen on the lowermost zooecium, X40. B. A zooecium, 

 X75. C. A zooecium from the basal surface. The bent distal wall is seen, 

 X75. D. A longitudinal section through a zooecium, X75. E. A gonozooecium 

 from the frontal zooecia bearing surface after the removal of the ovicell. The 

 two elongated openings are seen, through which the ovicellarian valves have 

 been in communication with the dietellae of the gonozooecium, X75. F. A 

 transverse section through the distal end of a zooecium. A row of uniporous 

 septulae is (very indistinctly) seen, X75. G. The end of a branch with a cylin- 

 drical internode, X40. H. A gonozooecium with the ovicellarian valves open, 

 X55. I. An ovicellarian valve from the internal surface, X55. J. A gonozooe- 

 cium with (ivicell seen from the basal edge, X40. K. A gonozooecium with 

 developing ovicellarian valves, lateral view. A lateral dietella and a part of the 

 basal one are seen, X75. L. The same gonozooecium from the basal edge, 

 X75. M. The stem of the gonozooecium. The distal wall (d iv) and a uni- 

 porous septula are seen, X75. N. The stem of the gonozooecium, lateral view. 

 Opposite the proximal part of the oval depression the oblique distal wall is 

 seen, X75. O. An oblique section through the middle part of the stalklike 

 kenozooecium, seen from the basal surface. The three septulae of the distal wall 

 are seen, X75. (A-O. After Levinsen, 1909.) 



Fig. 47. — Genus Calcnari- 

 opsis Maplcstone, 1899 



A, B. Calenariopsis morningtonensis Maplcstone, 1899. A. A single zooe- 

 cium, enlarged. B. Several zooecia adhering to a shell. (After Maplestone, 

 1899 and 1902.) Miocene, of Australia. 



