PLATE XXV. 



Figures 3, 7. 10, 12, 250 diameters; oth< liametera. 



Pm.f 

 Fig. 1. EtJASTRTJW CRA88TJM, . . .07 



_> semicell of vi r\ large form, . . 07 



.; transverse view <>t semioell, . 97 



I Euaotbi M oknattjm, a form of " E. crassum," . . 91 



I igg. ;,, 6. Ei A-n.M m oblongi m. two forms, .... 98 



I ,,_. - transverse view of semicell, . . 98 



Figs. 8, !. Ei ustri m iNSATi m. two forms, .... 99 



Fig, L0. " transverse view of semioell, . 99 



! igg. ii. 12. l-'.i L9TRUW vriiM.. from and transverse view, . 



ion 



