PLATE n. 



Fig. 1. OpJdosmilax mirabilis. Dorsal view of a vertebra near disk, x 40. 

 Fig. 2. Asteroschema japoniciim. Dorsal view of the skeleton of two oral 



angles and one ann base, with the radial shields turned up, i.e. in 



ventral view. X 3. 

 Fig. 3. Ditto. Ventral view of the skeleton of two oral angles and one 



arm base, x 3. 

 Fig. 4. Ditto. Side view of the skeleton of one oral angle and one arm 



base. X 3. 



Ditto. Outer view of an arm joint near disk. x3. 



Ditto. Inner articular surface of a vertebra near disk, x 3. 



Trichaster elegans. Ventral view of the skeleton of two oral angles 



and one arm base, x 2. 



Ditto. luterbrachial lateral view of the skeleton of the disk and 



two arm bases, x 2. 



Astrotoma sobrina. Dorsal view of the skeleton of two oral angles 



and one arm base, especially showing the muscles between the 



basal vertebrae and the genital plate, x 3. 

 Fig. 10. Ditto. Ventral view of the skeleton of two oral angles and one 



arm base, x 3. 

 Fig. 11. Astrothamnus echinaceus. A compound hook of an arm annulus. 



X 35. 



