BRYOZOA n3 



Fig. ja. Beania magellanica Busk. X i5o. From N° 1068. Section of avicularium showing the 



pariétal muscles. 

 jb. do do X i5o. Seen from thc front, (a) Cross bar. 



je. do do Section of base of mandible. X 25o. 



8. Smittia marionensis Busk var. X 25. From N° 683. 



9. Lepralia frigida sp. nov. From N° 288. Décalcifiée!, showing the Connecting tubes 



from zoœcium to zoœcium. 



10a. Smittia praestita sp. nov. X 25. From N° 5g6. 

 10b. do do Mandible. X 25o. From N° 5g6. 



11a. Lepralia galeata Busk. Operculum. X 85. From N° i3g. 

 11b. do do Mandible. X 25o. 



12a. Cellarinella dubia sp. nov. X 5. Probably from N° 623. 

 12b. do do X 25. 



i3. Turritigera stellata Busk. Decalcified showing Connecting tubes from zoœcium to 



zoœcium. 



14(7. Bifaxaria denticulata Busk. Mandible. X 85. 



14e. do do Mandible. X 85. From Stat. 320 Challenger Exp. 



l5a. Smittia crozetensis nom. nov. X 25. From N° 683, large form. 

 i5b. do do X 25. From N° 5g6, small form. 



16. Stomatopora major Johnst. X IO - From N° 570. 



ija. Barentsia disercta Busk. X 5oo. FromN°75i. Tangential section of the basai barrel- 



shaped cylinders, showing an external wall (ex.), con- 

 tracticle layer (et.), large celled layer (cl.) (see PI. VI, 

 figs. ta-/). 



ijb. do do Junction of pedicel with the polypide. X 85. 



17c. do do X 25o. Section through the middle of the barrel-shaped 



cylinder and the lower part of the pedicel, showing the chitinous wall, the 

 contractile layer, the large celled layer, and the protoplasmic contents, also 

 the contractions at the base ot the pedicel. 



18. Bifaxaria denticulata Busk. X 85. Section showing four zoœcia, and the pore tubes (pt.) 



also the commencements of new zoœcia (zc). 



iga. Bifaxaria rustica d'Orb. X 25. From N° 428. 

 îgb. do do X 2. 



20. Lichenopora fimbriata Busk. X 85. From N° 5g5. 



21. Schizoporella polymorpha Busk. Operculum. X 85. Simon's Bay, South Africa, 



Challenger. 



22. Schizoporella linearis Hass. Operculum. X 85. Naples. 



23. Schizoporella (Buffonella) rimosa Jull. Operculum. X 85. Cape Horn. 



24. Schizoporella Cecilii Aud. Operculum. X 85. Naples. 



25. Schizoporella arrogata Waters. Operculum. X 85. Naples. 



