Plate 22. 

 1-7. Acrosalenia spinosa Agass. 



1. Part of actinostoine of specimen measuring 8.8 mm. in diameter. 



2. Part of actinostome of specimen measuring 9 mm. in diameter. 



3. Actinal part of the right anterior ambulacrum of specimen measuring 13 mm. ia 



diameter. 



4. Abactinal system of specimen measuring 7,3 mm. in diameter. * 



5. Abactinal system of specimen measuring 9 mm. in diameter. 



G. Abactinal system of specimen measuring 11.5 mm. in diameter. 



7. Abactinal system of specimen measuring 13 mm. in diameter. 



8. Acrosalenia Wiltonii Wright. 



8. Abactinal system of specimen measuring 20 mm. in diameter. 



II 

 fl 



