BRYOZOA OF THE PHILIPPINE REGION 



215 



Fig. 76. — Genus Caberea Lamouroux, 1S16 



A, B. Caberea ellisi Fleming, 1818. A. A few zooecia enlarged. Vibracular 

 chamber visible from the front (v. ch); the minute lateral avicularia (lat. av); 

 serrated vibraculum (v); X50. B. Dorsal view of a few zooecia to show vibracu- 

 lar chambers (v. ch) extending obliquely across the back of each zooecium, the 

 groove (gr) and the long vibraculum (v); also the rootlets (r) arising from each 

 vibracular chamber and proceeding downward through the middle of the branch. 

 Rootlets from one side only shown, X50. (A, B, after Robertson, 9905.) 



C-M. Caberea darwini Busk, 1884. C. Lateral surface, X25. D. Anterior 

 surface, X50. E, F, Ova out of the ovicells, X85. G. Avicularian, mandible, 

 X250. H. Operculum, X85. (C-H, after Waters, 1896.) 



I. Longitudinal section through an avicularium; ce, external layer of the ciliated 

 organ; ci, internal layer of the same organ; cmd, mandibular cavity; eel, ectocyst; 

 epa, avicularian epiderm; epf, facial epiderm (endocyst); md, mandible ( = cndo- 

 cyst); muab, abductor muscle of the mandible; muad, adductor or retractor 

 muscles of the mandible; pa, aborted polypide (^ciliated organ) (after Calvet, 

 1900). J. Lateral avicularian mandible, X85, X250. K. Anterior avicularian 

 mandible, X250. L. Operculum, X85. (J-L, after Waters, 1883.) 



M. Longitudinal section of a vibraculoid avicularium (after Calvet, 1900); 

 cmd, cavity of the vibraculum ( = endocyst); ect, ectocyst; epv, vibracular epi- 

 dermis; md, vibraculoid mandible; muab, abductor mandibular muscle; muad, 

 adductor mandibular muscle; pa, aborted polypide ( = ciliated organ peculiar 

 body with ci, its internal layer, and ce, its external layer. 



N. Caberea lata Busk, 1852. Sketch showing chitinous tubes at the articu- 

 lation, X25. (After Waters, 1887.) 



