298 



D. S. FLETCHER 





f 



55 



- :. 



57 



56 



58 



FlGS 55 _ 57 . Zamarada pulverosa, genitalia (A.P.) . 55-57. each a dorsal process of a left valve. 

 Fig. 58. Zamarada ascaphes, genitalia (A.P.). 58, dorsal process of left valve. 



