PLATE IV 



Figs. 1-6. Russellia mirabilis gen.n., sp.n. 



Fig. I. Type specimen. St. 587 (filiform parts of tentacles added 

 from another specimen), x 6. 



Fig. 2. Internal view of perradial edge of the stomach. St. 1S71. 



Fig. 3. Oral tentacle and part of mouth rim. St. 1871. 



Fig. 4. One-quarter of the umbrella-margin from below, with the 

 roots of three tentacles, each flanked by two dwarf tentacles. 

 St. 1871. 



Figs. s. ^- Tentacle root. St. 1871. Fig. 5, lateral view. Fig. 6, 

 frontal view. 



Fig. 7. Laodicea piilchra Browne. Gonad and part of the umbrella- 

 margin, aboral view. St. 1897. x 10. 



Fig. 8. Ptychogena antarctica Browne. Aboral view of gonad; distal 

 end upwards. St. 1959. x 4. 



