PLATE 8. 



Erylus caliculatus Lkndenfeld. 

 Figures 1-12, 15-20. 



Erylus rotundus Lendenfei.d. 



Fig. 13. — var. megarhabtia Lenuenfeld. Form A. South Molokai. 

 Fig. 14. — var. cidaris Lendenfeld. 



1. — Central part of a young aspidaster of Erylus caliculatus, showing the rays which form the disc; mag- 

 nified 2000; II. V. phot. Zeiss, q. monochr. 1.7, q. oc. 10. 



2-12. — Acanthi ylastcrs and parts (rays) of such of Enjhis caliculatus; magnified 2000; u. v. pliot. 

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



2, a ray of a very large acanthtylaster; 



3, a small, rather regular acanthtylaster, focused liigli; 4, 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, part of a small, particularly thin-rayed 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. megarlxahda (form A) from Sovith Molokai; 



14, of an adult aspidaster of Erylus rutundus var. cidaris; 



15a, of a young, still quite smooth aspidaster of Erylus caliculatus; 



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



17, of an adult aspidaster with numerous protruding rays, of Enjlus 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: 



18, of an aspidaster not quite fully developed; 



19, of a fully developed aspidaster, focused high; 



20, the same, focused low. 



