PLATE 8. 



Erylus caliculatus Lendenfeld. 

 Figures 1-12, 15-20. 



Erylus rotundus Lendenfeld. 



Fig. 13. — var. niegarhabda Lendenfeld. Form A. South Molokai. 

 Fig. 14. — var. cidaris Lendenfeld. 



1. — Central part of ayoungaspidasterof £'n//M.s cohV((/f((».s, showing the raj's wliicli form the(li.sc; mag- 

 nified 2()00; u. V. phot. Zeiss, q. monochr. 1.7, q. oc. 10. 



2-12. — Acanthtylasters and parts (rays) of such of Erylus caliciilaliis; magnified 2000: u. v. ])hot. 

 Zeiss, q. monochr. 1.7, q. oc. 10: 



2, a ray of a vcrj- large acanthtj'laster; 



3, a small, rather regular acanthtyla.ster, focused high: A, the same, focused low; 

 5, a large regular acanthtylaster, focused high; 6, the same, focused low; 



7, a small acanthtylaster, some of the rays of which are considerably shortened, focused high; 8, 



the same, focused low; 

 9, 10, single rays of small acanthtylasters; 



11, jjart of a small, particularly tliin-raycd acanthtylaster: 



12, part of a small, particularly thick-rayed acanthtylaster. 



13-17. — Marginal parts of aspidasters; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7. q. oc. 10: 



13, of an adult aspidaster of Erylus rotundus var. megarhahda (form A) from South .Molokai; 

 It, of an adult aspidaster of Erylus ruluiidus var. cvlaris; 



].5a, of a young, still quite smooth aspidaster of Erylus calicuUilus; 

 15b, 16 of young aspidasters with only few protruding rays, of Erylus mliculatus; 

 17, of an adult aspidaster with numerous protruding rays, of Erylus caliculatus. 

 18-20. — Portions of the surface of the central parts of aspidasters of Erylus caliculatus; magnified 2000; 

 u. V. phot. Zeiss, q. monochr. 1.7, q. oc. 10: 

 IS, of an aspidaster not quite fully developed; 



19, of a fully clevelojjed a.spidaster, focused high; 



20, the same, focused low. 



