ioS EXPÉDITION ANTARCTIQUE BELGE 



Fig.io. Schizoporella Eatoni Busk. Operculum. X 85. From Cape Adare (« Southern Cross » 



Expédition). 



lia. Schizoporella hosteeiisis Jullien. X 25. From N° 5g6. Showing the primary zoœcium, 



and in the zoœcium on the right the calcification 

 round the aperture is not complète. 



nb. do do X 25. From X° 619. 



ne. do do Operculum. X 85. 



12a. Schizoporella gelida sp. nov. X 25. From N° 332. 



12b. do do Interior, showing condyles (denticles). X 25. 



12c. do do Operculum. X 85. 



i3. Megapora ringens Busk. Operculum. X 85. From Shetland. 



PLATE IV 



Fig. la. Smittia antarctica sp. nov. X 25. From X" 683. 



Operculum. X 85. 

 Mandible. X 85. 

 Natural size. 



Transverse section showing rosette plates. X 2 5- 

 Longitudinal section. X 12. Showing rosette plates. 

 Extremity of tentacles. X 5oo. Showing sac containing 

 darkly stained mass. From N° 618. 

 ih. do do Section showing aperture (ap) ; tentacular sheath (ts) ; 



and gland-like bodies (gl). X 85. 

 ». nov. X 25. From X° 683. 

 Operculum X 85. 



Section showing aperture with operculum ; and below it 

 the avicularium glands, with the mandible above the 

 glands. X 85. 



3. Smittia conspicua sp. nov. X 25. From N° 683. 



4. Smittia marsupium MacG. X 25. From N° 5g6. 

 5(7. Smittia inclusa sp. nov. X 2 5. Showing ovicells, and the projections (p) over the 



aperture, which in the ovicelligerous zoœcia ifiay be 

 entirely hidden, as in the lower zoœcium on the right 

 hand side. From N° 683. 

 Natural size. 

 Mandibles. X 85. 

 Transverse section. X 12. 

 Longitudinal section. X 12. 

 Extremity of zoarium. X 12. 

 nov. X 25. From N° 683. 

 Natural size. 

 X 2 5. Tranverse section. 



