PLATE 38. 



Hyalonema (Hyalonema) obtusum gracilis Lendenfeld. 

 Figures 1-8. 



1-3. — A .small micramphidisc; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10: 



1, focussed high; 2, focussed lower; 3, focussed still lower. 

 4, 5. — The central part of the shaft of a small macramphidisc; magnified 2000; u. v. phot. Zeiss, q. 

 monochr. 1.7, q. oc. 10: 



4, focussed lower; 5, focussed higher. 



6. — Part of the tooth-verticil of a small macramphidisc, focussed high to show the two uppermost 



anchor-teeth: magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10. 



7, 8 — Part of the tooth-verticil of the small macramphidisc, the central part of the shaft of which is 



shown in figs. 4 and 5; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10: 

 7, focussed higher; 8, focussed lower. 



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