PLATE 80. 



Hyalonema (Hyalonema) sp. 



Figures 1-16. Station 3684 (A. A. 17). 



I, 2. — ■ Parts of two macramphidiscs; magnified 500; phot. Zeiss, apochr. 8, compens. oc. 6. 



3. — A micramphidisc; magnified 500; phot. Zeiss, apochr. 8, compens. oc. 12. 



4. — -A microhexactine; magnified 500; phot. Zeiss, apochr. 8, compens. oc. 12. 

 5-9. — Macramphidiscs; magnified 50; phot. Zeiss, apochr. 16, compens. oc. 2. 



10. — The end-part of an anchor-tooth of a macramphidisc; magnified 500; phot. Zeiss, apochr. 8, 

 compens. oc. 12. 



II, 12. — An anchor of a stalk-spicule ; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6: 



11, focussed lower (the shaft in focus); 12, focussed higher (the end-parts of the uppermost anchor- 

 teeth in focus). 



13. — An acanthophore; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6. 



14. — A pentactine pinule with short distal ray; magnified 300; phot. Zeiss, apochr. 8, compens. oc. 12. 



15. — Part of a group of diactine pinules in situ in a section; magnified 300; phot. Zeiss, apochr. 8, 



compens. oc. 12. 



16. — A pentactine pinule with long distal ray; magnified 300; phot. Zeiss, apochr. 8, compens. oc. 12. 



