F_H.Michael del th Lith" Edin* 
PS Rie VEN AtSieESR, SriUiE Am) S> om. sp: 2-3.HYMENASTER GEOMETRICUS, n sp. 
4-5.HYMENASTER LATEBROSUS,n sp. 6-7. HYMENASTER MEMBRANACEUS, Wyville Thomson. 
