[jima, Bexactinellida, Cont ri bution IV 



Jour. Sei. Coll. Vol. XVIII., Art. 7, PI. XI. 

 11 





3SX 



1—10. Staurocalyptus heteractmus f.j. 11—15. Staurocalyptus sp. 



16 — 22. Acanthascus cactus F. E. Sch. i.,ih 't im/, riu'-iHw fni<i>,Mi'' 



