PLATE 37. 



Hyalonema (Hyalonema) obtusum gracilis Lendenfeld. 

 Figures 1-22. 



1-5. — Small micramphidiscs; magnified 500; phot. Zeiss, H. I. apochr. 2, compens. oc. 6. 

 6-11. — Large micramphidiscs; magnified 500; phot. Zeiss, H. I. apochr. 2, compens. oc. 6. 

 12, 13. — A small macramphidisc; magnified 500; phot. Zeiss, H. L apochr. 2, compens. oc. 6 



12, focussed higher; 13, focussed lower. 

 14-19. — Small macramphidiscs; magnified 500: 



14, 16, 18, 19, phot. Zeiss, H. I. apochr. 1, compens. oc. 6; 



15, 17, phot. Zeiss, apochr. 4, compens. oc. 12. 



20. — A large macramphidisc; magnified 500; phot. Zeiss, apochr. 4, compens. oc. 12. 



21, 22. — A large macramphidisc; magnified 500: 



21, u. V. phot. Zeiss, q. monochr. 6, q. oc. 10, and focussed higher; 



22, phot. Zeiss, apochr. 4, compens. oc. 12, and focussed lower. 



