micro lém't^or. 



I jdiri'.itic I 



F] g-, 2 J9 . s eleTio c o c cidium 

 mtermedium Léjer etDutovScq 



-901- 



<Àaa^ CyCK/^y^A^y^^/v^£^ l'y}:) • J^ o-vt/fc "t/uru. 



