152 Takeda.—Dysmorphococcus variabilis } gen. et sp. nov. 
Figs. 1— 1 5. Dysmorphococcus variabilis , Tak., gen. et sp. nov. All x r,ooo. a — anterior 
view ; a! = oblique anterior view ; f= front view ; f' = oblique front view ; p — posterior view ; 
s = side view; n — nucleus; py = pyrenoid ; sh — shell; st = stigma (= eye-spot). Figs. 7, 
12-15 represent empty shells. Stigma is not represented in Fig. 10, which was drawn from 
a specimen the colour of which had faded after fixation and mounting. 
