PLATE LI. 



Fi>.. i an (zonal view). Enlarged 600 diameters. Description,] 



Y\<,\i on* ia Mann (valval view). Enlarged 600 diameters. Description,] 



1 Mann. Enlarged 300 diameters. Description,] 



Fiq. \—Trigonium rustievm Mann. Enlarged 600 diameters. Description, p. 294. 

 lium adspersum Mann. Enlarged 600 diameters. Description, | 



136 



