PLATE 10. 



Caulophacus schulzei Wilson. 



Figs. 1-3, 5, 6, 9, 10, 15-26, 28, 29 — specimen E 



Fig. 4 — specimen B. 



Fig. 7 — specimen D. 



Figs. 8, 11-14 — specimen F. 



Fig. 27 — specimen C. 



1-7. — Parts of rhabds of the body; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6: 

 1 and 2, the ends, and 3 the central part, of a rhabd of specimen E; 



4, an end of a rhabd of specimen B; 



5, 6, ends of rhabds of specimen E; 

 7, end of a rhabd of specimen D. 



8. — Part of the skeleton-net of the peduncle of specimen F; magnified 200; phot. Zeiss, apochr. 8 



compens. oc. 6: 



a, pinules embodied in the skeleton-net. 



9, 10. — Rhabds of the body of specimen E; magnified 50; phot. Zeiss, achr. aa, compens. oc. 6. 



11, 12. — Free ends of rhabds of the skeleton-net of the peduncle of specimen F; magnified 200; phot 



Zeiss, apochr. 8, compens. oc. 6. 

 13, 14. — Parts of the skeleton-net of the peduncle of specimen F; magnified 30; phot. Zeiss, planai 



20 mm. 



15, 16. — The distal end of a main-ray and the proximal parts of the end-rays arising from it, of a larg( 

 discocome of specimen E; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10: 



15, focussed lower; 16, focussed higher. 

 17-19. — Discocomes of specimen E; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6: 



17, 18, small ones with short, strongly divergent end-rays; 



19, a large one with long, more upright end-rays. 

 20-25. — Parts of discocomes of specimen E; magnified 600: 



20, 22, 23, phot. Zeiss, H. I. apochr. 2, compens. oc. 6; 



21, phot. Zeiss, apochr. 4, compens. oc. 12; 



24, 25, u. V. phot. Zeiss, q. monochr. 6, q. oc. 10; 



20, 21, of large ones with long, more upright end-rays; 

 22, 23, of intermediate ones; 



24, 25, of small ones with short, strongly divergent end-rays. 

 26. — The distal part of an end-ray of a discocome of specimen E; magnified 2000; u. v. phot. Zeiss, q 



monochr. 1.7, q. oc. 10. 

 27-29. — Groups of microscleres from spicule-preparations: 



27, of specimen C; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6; 



28, 29, of specimen E; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6; 



a, discohexasters, hemidiscohexasters, and discohexactines; b, discocomes. 



