PLATE III. 



Fig. 1. OiMacantha hidentata. Dorsal view of the skeleton of two oral 



angles and the first vertebra, x 10. 

 Fig. 2. Ditto. Inner articular surface of a vertebra near disk, x 10. 

 Fig. 3. Ditto, Outer articular surface of the same, x 10. 

 Fig. 4. 02M6lébes tuherosa. Dorsal view of the skeleton of two oral angles 



and one arm base, with the radial shields turned up, i.e. in vental 



view, x 10. 

 Fig. 5, OpMolimna antardica. Dorsal view of two oral angles, x 10. 

 Fig. 6. OpMolimna papillata. Dorsal view of two oral angles, x 12. 

 Fig. 7. Ampliiadis umhonata. Dorsal view of the skeleton of two oral 



angles and one arm base, x 20. 

 Fig. 8. Ditto. Ventral view of a distal vertebra. x80. 

 Fig. 9. OjMadis pleropoma. Dorsal view of the skeleton of two oral 



angles, x 15. 

 Fig. 10. Ophiopholis aculeata. Dorsal view of the skeleton of two oral 



angles and one arm base, x 6. 

 Fig. 11. Amphioplus ancistrotvs. Dorsal view of the skeleton of two oral 



angles, x 18. 

 Fig. 12. AmpMacantha dividua. Dorsal view of the skeleton of two oral 



angles of a young specimen, x 35. 

 Fig. 13. Ampliiura vadicola. Dorsal view of the skeleton of two oral 



angles, x 10. 



