536 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.14 



PLATE 34 



Fig. 1. Stomachetosella cruenta (Norman), zooecium with rough 



tuberosities, outline of operculum. 

 Fig. 2. Stomachetosella limbata (Lorenz), zooecium with ovicell, 



outline of operculum. 

 Fig. 3. Stomachetosella sinuosa (Busk), zooecia with ovicell and 



form of aperture. 

 Fig. 4. Stomachetosella abyssicola new species, infertile zooecium. 

 Fig. 5. The same, ovicell. 

 Fig. 6. The same, operculum. 

 Fig. 7. Stomachetosella distincta new species, zooecium and ovicell 



with umbos. 

 Fig. 8. The same, operculum with muscle attachments. 

 Fig. 9. Robertsonidra oligopus (Robertson), zooecium with ovicell 



and lateral avicularium, reduced Yz. 

 Fig. 10. The same, dorsal side showing tubular attachment processes. 

 Fig. 11. The same, operculum and mandible with central lucida. 



