PLATE 3. 



Erylus sollasii Lendenfeld. 



Figures 1-28. Race III. Large dark specimen from northeast Hawaii. 



1. — Side view of a triaene with branched clades, and a reduced, cylindrical, terminally rounded rhabd- 



ome; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6. 

 2-G. — Apical views of cladomes of triaenes; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6: 



2-4, with all clades branched dichotomously or in a more complicated manner; 



5, 6, with only two clades thus branched and the thinl simple. 

 7, 8. — Parts of large acanf htylastcrs; magnified 1800; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10. 

 9-11. — Aspidasters; magnified 350; phot. Zeiss, apochr. 4, compens. oc. 6: 



9, a perfectly adult one; 



10, a nearly adult one; 



11, a young, still smooth one. 



12. — Side view of a triaene with branched clades; magnified 100; phot. Zeiss, apochr. 16, compens. 



oc. 6. 



13. — Two isoactine nn'crorhatxls; magnified 300; phot. Zeiss, apochr. 4, compens. oc. 6. 



14. 15. — Two isoactine microrhabds; magnified 540; u. v. phot. Zeiss, q. monochr. 6, q. oc. 10. 

 16, 17. — Aspidasters; magnified 540; u. v. phot. Zeiss, q. monochr. 6, q. oc. 10: 



16, a young one; 



17, an adult one. 



15. — Promonaene-like style, abruptly bent near the pointed end; magnified 100; phot. Zeiss, apochr. 



16, compens. oc. 6. 



19-22. — Rhabd mcgascleres; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6: 

 19, 20, large amphioxes; 



21, style; 



22, small amphiox. 



23, 24. — Side views of triaenes; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6: 



23, with three-branched clailes; 



24, with simple and two-branched clades. 



25, 26. — Groups of microscleres from centrifuge-spicule preparations; magnified 540; u. v. phot. Zeiss, 

 q. monochr. 6, q. oc. 10: 



a, microrhabd; b, small, most probably foreign, sphaeraster; c, large acanthtylasters; d, 

 very young aspitlaslers. 



27. — View of the largest specimen; natural size; phot. Zeiss, anastig. 480/412 mm. 



28. — Part of tlie surface of an adult aspidaster; magnifietl ISOO; u. v. phot. Zeiss, q. monochr. 1.7, 



q. oc. 10. 



Erylus oxyaster Lendenfeld. 

 Figures 29-35. 



29-35. — Microscleres and groups of such from centrifuge-spicule preparations: magnified 600; u. v. 

 phot. Zeiss, q. monochr. 6, q. oc. 10: 



a, (Figs. 29-32, 35) microrhabds; 



b, (Fig. 35) large diactine oxyaster; 



c, (Fig. 34) large triactine oxyaster with one ray reduced; 



d, (Figs. 32, 33, 35) large oxyasters with three or more fully developed rays; 



e, (Fig. 32) small oxyaster with numerous rays. 



