Plate 75. 

 Araeosoma eurypatum A. Ag. and CI. 



1. Actinostome and base of corona, somewhat damaged, x 1.3. 



2. Abaetinal system. X 2. 



3. Actinal ambulacral and interambulacral plates, five millimeters from ambitus, x 1.5. 



4. Abaetinal ambulacral and interambulacral plates, just above ambitus, x 1.3. 



