PLATE 10. 
Caulophacus schulzei Witson. 
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 1; 
4, an end of a rhabd of specimen B; 
5, 6, ends of rhabds of specimen H; 
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 I’; 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, planar 
20 mm. 
15, 16— The distal end of a main-ray and the proximal parts of the end-rays arising from it, of a large 
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 EH; 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 FE; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6; 
a, discohexasters, hemidiscohexasters, and discohexactines; b, discocomes: 
