PLATE LXXII. 



1. FLUSTRELLA HISPIDA, p. 506; young zooecia. 



2. - - , zooecia with the spines developed 



around the orifice only. 



3. - , a zooecium surrounded by spines. After 



Srnitt. 



4. , the bilabiate orifice with the polypide 



issuing. 



5. , the expanded tentacular bell. 



6. BUSKIA NITENS, p. 532; colony creeping over a 



stem. 



7. - , a single cell. 



7 a. - , the retractile sheath unrolled, with 



operculum of setae. 



8. RHABDOPLEURA COMPACTA, p. 581. 



8 a. , nat. size. 



9. - , portion of the " axial cord/' with 



statoblasts (?), seen from below. 



