Plate. II. 



Fig. 7. Filigclla mitsulairii, ii. sp, ; distal portion of a colony, x 10. 



Fig. 8. Same. Spicules of tentacle base, x 100. 



Fig. 9. Same. Spicules of general cœnenchyma. x 100. 



Fig. 10. Acis pustulata Wright & Studer: scale at the margin of polyp- 

 calyx. X 100. 



Fig. 11. Same, a, collaret spicules at tentacle base ; b, two large opercular 

 spicules on the aboral side of tentacles, x 100. 



Fig. 12. Same, a-b, spicules of tentacles ; c, spicules of pinnules, x 

 100. 



Fig. 13. Acis îjiviaî, n. sp. ; terminal portion of a branch, x 10. 



Fig. 14. Same. Scale at the margin of polyp-calyx, x 50. 



Fig. 15. Same, a, spicule at the base of tentacle; b, two large opercular 

 spicules on the dorsal side of tentacles, x 100. 



Fig. 16. Same, a, spicules of tentacles ; b, spicules of pinnules, x iOO. 



Fig. 17. Acis miyajimai, n. sp. ; portion of a branch ; lateral aspect, x 5. 



Fig. 18. Same. Typical polyp-calyx ; terminal aspect, x 15. 



Fig. 19, Same, a, spicules of tentacle-base ; b, opercular spicules on the 

 dorsal side of tentacles ; c, spicules of tentacles, x 50. 



Fig. 20. Same Cœnenchyma spicules from deeply situated layer ; a, spindle ; 

 b, club-shaped spicules, x 50. 



