PLATE XI. 



Figures mat;aified 500 diameters. 



Page. 

 Fig. 1. DociDiUM CRENOLATUM — (C nodidosuih) , . . 51 



Figs. 2, 3,4. DociDiUM TBABEcnLA. Compare Plate XV, figs. 1-7, . 51 



Fig. 5.. DociDiDM Flotowii, Variety, . . . . .52 



Figs. 6, 7 DoCIDIUM TEDNCATUM, . . .52 



Fig. S. DoCIDIUM CLAVATUM, . 51 



