IM. I. 



1. Sguatnastcr echinatus. 



a, diagram to illustrate the arrangement of the plates, denuded of the spines on one 

 side. 



2. Protaster stellifer. 



a &? b, dorsal and ventral sidtts of another specimen. 



3. Eugaster concinnus. 



4. Lecanocrinus solidus. 



5. Lecanocrinus nitidus. 



6. Lecanocrinus incisus. 



7. Lccanocrinits cxcci-r^citus. 



8. Lecanocrinus puteolus. 



9. Platycrinus corporiculus. 



10. Callocystites tripectinatus, ventral side. 



a, sinistral side. 

 />, dextral side. 



