PLATE 48. 
Hyalonema (Prionema) spinosum LENDENFELD. 
Figures 1-31. 
1-10.— Acanthophores; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6: 
1-5, tetractines; 
6, a triactine; 
7-9, diactines; 
10, a monactine. 
11, 12.— Views of the two specimens; reduced 1: 0.9; phot. Zeiss, anastig. 480/412 mm.: 
11, side-view of the smaller specimen; 
12, the larger specimen seen from above. 
13.— Part of an axial section of the smaller specimen; magenta; magnified 10; phot. Zeiss, planar 50mm. 
14-16.— The central part of the shaft of a large macramphidise; magnified 2000; u. v. phot. Zeiss, q. 
monochr. 1.7, q. oc. 10: 
14, focussed high; 15, focussed low; 16, focussed intermediate. 
17—22.— Side-views of dermal pinules; magnified 300; phot. Zeiss, H. 1. apochr. 2, compens. oc. 6: 
17-19, 21, 22, pentactine pinules; 
20, a hexactine pinule. 
23.— Part of the gastral pinule-fur in an axial section; magnified 100; phot. Zeiss, apochr. 16, compens. 
OCwOL 
24, 25.— Gastral pinules; magnified 300; phot. Zeiss, apochr. 4, compens. oc. 6: 
24, apical view of the lateral rays of one; 
25, side-view of another. 
26, 27.— Part of the distal ray of a gastral pmule; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, 
q. oc. 10: 
26, focussed lower; 27, focussed higher. 
28-31.— Small micramphidises; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10: 
28, a larger one with slightly curved shaft; 
29, a smaller one with broad anchors; 
30, 31, a smaller one with narrow anchors; 
30, focussed higher; 31, focussed lower. 
