PLATE 19. 
Holascus edwardsii LENDENFELD. 
Figures 1-24. 
1-3.— Oxyhexasters; magnified 600; phot. Zeiss, apochr. 4, compens. oc. 12. 
4, 5.— Parts of hemioxyhexasters; magnified 600; 
4, phot. Zeiss, H. I. apochr. 2, compens. oc. 6; 
5, phot. Zeiss, apochr. 4, compens. oc. 12. 
6-10.— Oxyhexasters and hemioxyhexasters; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6. 
11.— An end-ray of an oxyhexaster; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. oc. 10. 
12, 13.— The central part (the main-rays) of a graphiocome; magnified 600; phot. Zeiss, apochr. 4, 
compens. oc. 12: 
12, focussed high; 13, focussed low. 
14.— Part (the two tips) of a ring-shaped sigm; magnified 2000; u. v. phot. Zeiss, q. monochr. 1.7, q. 
oc. 10. 
15.— Ring-shaped sigm with the spiral axis obliquely situated; magnified 600; phot. Zeiss, apochr. 4, 
compens. oc. 12. 
16-21.— Ring-shaped sigms with the spiral axis parallel to the optical axis of the microscope; tnagnified 
600: 
16, 19-21, phot. Zeiss, apochr. 4, compens. oc. 12; 
17, 18, phot. Zeiss, H. I. apochr. 2, compens. oc. 6. 
22-24.— Centrotyle rhabds; magnified 200; phot. Zeiss, apochr. 8, compens. oc. 6. 
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