he Nt es 
| 
PLATE 29. 
Eurete spinosum LENDENFELD. 
Figures 1-26. 
1, 2.— Scopules; magnified 300; phot. Zeiss, apochr. 4, compens. oc. 6. 
3-6.— The centres and end-rays of two scopules; magnified 600; phot. Zeiss, apochr. 4, compens. oc. 12: 
3, a scopule-centre focussed high; 
4, the centre of the same scopule focussed lower; 
5, the centre of another scopule focussed high; 
6, the centre of the same scopule focussed lower. 
7,8.— The centre and end-rays of a scopule; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10: 
7, focussed higher; 8, focussed lower. 
9.— The central part of a hemioxyhexaster; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10. 
10-13.— Hemioxyhexasters and parts of such; magnified 600; phot. Zeiss, apochr. 4, compens. oc. 12: 
10, an ordinary, fairly regular, slender-rayed hemioxyhexaster; 
11, 13, parts of ordinary, fairly regular, slender-rayed hemioxyhexasters; 
12, a stout-rayed irregular hemioxyhexaster. 
14-17.— The distal end-parts of main-rays of hemioxyhexasters with one of the end-rays or part of it; 
magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10. 
18, 19.— The two faces of the skeleton-net; magnified 6.6; phot. Zeiss, planar 50 mm.: 
18, the dermal face; 
19, the gastral face. 
20, 21.— Apical views of two superficial pentactines (the crosses formed by their lateral mye) ; Magni- 
fied 200; phot. Zeiss, apochr. 8, compens. oc. 6. 
22.— A lateral ray of a superficial pentactine; magnified 200; phot. Zeiss, apochr. 8, compens. oc.6. 
23.— Part of the dermal zone of the skeleton-net; magnified 50; phot. Zeiss, apochr. 16, compens. oc. 4. 
24.— Part of the gastral zone of the skeleton-net; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6. 
25.— Part of the gastral zone of the skeleton-net; magnified 50; phot. Zeiss, apochr. 16, compens. oc. 4. 
26.— Group of spicules from a spicule-preparation; magnified 200; phot. Zeiss, apochr. 8, compens. 
oc. 6: 
a, a scopule; b, hemioxyhexasters. 
