PLATE 86. 



Hyalonema (Oonema) sequoia Lendenfeld. 

 Figures 1-36. 



1-6. — Large macramphidiscs; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6. 



7. — Portion of the gastral sieve; magnified 20; phot. Zeiss, planar 20 mm. 



8. — View of the specimen; reduced 1: 0.83; phot. Zeiss, anastig. 480/412 mm. 



9. — A ray of a microhexactine; magnified 500; phot. Zeiss, H. I. apochr. 2, compens. oc. 6. 



10. — A monactine microhexactine-derivate ; magnified .500; phot. Zeiss, H. I. apochr. 2, compens. oc. G. 



11. 12. — Part of a microhexactine; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10: 



11, a whole ray, focussed higher; 



12, the distal part of the same ray, focussed lower. 



13-26. — Large superficial pinules; magnified 50; phot. Zeiss, apochr. 16, compens. oc. 4: 



13, a hexactine one; 

 14-26, pentactine ones. 



27-34. — Small macramphidiscs; magnified 100; phot. Zeiss, apochr. 16, compens. oc. 6. 

 35, 36. — Microhexactines; magnified 500: 



35, a small one; phot. Zeiss, apochr. 8, compens. oc. 12; 



36, a large one; phot. Zeiss, H. I. apochr. 2, compens. oc. 6. 



