Plate 38. 



Fig. 1. Octocanna polynema; oral view; from preserved specimen ; (1) lip; (go) gonad. 

 X 6. 



Fig. 2. Octocanna polynema ; one quadrant of bell margin ; (t.ra) radial tentacle ; (t-) rudi- 

 mentary tentacular knob ; (otc) otocyst ; (p.ex) excretory papilla. X about 20. 



Fig. 3. Octocanna polynema; otocyst (otc) witli otolith (otl). x about 75. 



Fig. 4. Phialium duodecimalis ; oral view of a preserved specimen. X 30. 



Fig. 5. Phialium duodecimalis ; one quadrant of bell margin, showing radial tentacles 

 flanked by cirri (ci) and otocysts (otc). X 50. 



Fig. 6. Phialidium discoida. Portion of bell margin showing closely crowded tentacles 

 with large basal bulbs and otocysts (otc). X 60. 



Fig. 7. Phialidium discoida; otocyst (otc) containing a single otolith. In many instances 

 the otocysts contain several otoliths. 



Fig. 8. Ptychogena erythrogonon, sp. nov., cordylus ; (en) endodermic core ; (ec) ecto- 

 dermic covering layer. X 75. 



Fig. 9. Ptychogena erythrogonon ; cirrus with terminal nematocyst cluster, x 75. 



Fig. 10. Amjjhinema australis ; one half of bell margin, with two large tentacles, and 

 rudimentary tentacular knobs with ocelli (o). x 20. 



Fig. 11. Amphinema australis. Cross-section of bell, through gonads (go) to show inter- 

 radial position of the latter; (1) lip; (era) radial canal. From a photograph 

 of a dissection, x 30. 



Fig. 12. Ectopleura ochracea; side view of preserved specimen, x 50. 



Fig. 13. Ectopleura ochracea; aboral view of same specimen to show extent of exumbral 

 nematocyst ridges (nem). 



