PLATE 69. 
Hyalonema (Hyalonema) sp. 
Figs. 1-5. Station 4656. 
1, 2.— Pinules; magnified 300; phot. Zeiss, apochr. 8, compens. oe. 6. 
3-5.— Amphidises; magnified 500; phot. Zeiss, apochr. 4, compens. oc. 12. 
Hyalonema (Hyalonema) tylostylum LENDENFELD. 
Figures 6-25. 
6.— A hexactine megasclere; magnified 50; phot. Zeiss, planar 20 mm., compens. oc. 6. 
7.— A hypodermal pentactine; magnified 50; phot. Zeiss, planar 20 mm., compens. oe. 6. 
8, 9.— Normal tylostyles; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6. 
10.— The tyle-bearing part of an abnormal tylostyle; magnified 100; phot. Zeiss, apochr. 16, compens. 
oc. 6. 
11-13.— Amphiox megascleres; magnified 50; phot. Zeiss, planar 20 mm., compens. oc. 6. 
14-25.— Amphidiscs and parts of such; magnified 500: 
14, a large macramphidise; phot. Zeiss, apochr. 8, compens. oc. 12; 
15-18, micramphidises; phot. Zeiss, H. 1. apochr. 2, compens. oc. 6; 
19, centrum and one anchor of a large macramphidise; phot. Zeiss, H. I. apochr. 2, compens. oc. 6; 
20, a small macramphidise; phot. Zeiss, apochr. 4, compens. oc. 12; 
21, a small macramphidise; phot. Zeiss, H. I. apochr. 2, compens. oc. 6; 
22, 23, small macramphidises; phot. Zeiss, apochr. 4, compens. oc. 6; 
24, 25, the central tyle of the shaft of two large macramphidises; phot. Zeiss, apochr. 8, compens. 
oc. 12. 
