Plate 79. 



Figs. 1-8. Ht'llastir incci; ?> speciiiH'iis fi'diii sfiition ^^S^^S. onhir.ii'od, to sliow 

 variations, p. 32G. 



4. Iconastcr jtcricrctiis : aluiclinal surl'aco (if type, onlariied, p. :>0n. 



5. Sp1uicri(><li'<ciis scolncii/iit IIS ; jiliaclinal surface of type, ciilai'Licd. 



p. 287. 

 G2G 



