SOUTH AFRICAN JOURNAL OF SCIENCE, VOL. XV1I1. 



PLATE IV. 



X LUTEA(d) 



FIG. 1. 





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w^STC? 



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-t.OX. BMKCROSS HVBSIO BACKCB05S LUTEA 



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id 



m IB 



f-7 



1/ 



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tv-l 



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FIG. 2. 

 HYBRID DIGITALIS. 



