PLATE XXV. 
Eurydesma cordatum, var. ovale, E. <b D. 
Left valve, testiferous in part. 
Dorsal view of the united valves of PI. XXI, fis;. 5. 
Euryde.snia cordatum, Morris. 
Right testiferous umbonal region and articulus, displaying a highly prosogyrate umbo, 
deep byssal groove, resilifer, Freeh’s smooth space, cardinal fold, and lunular 
depression. 
Eurydesma hobartense, Johnston. 
Portion of a testiferous left valve with an extended anterior end. 
Interior of Fig. 4, with a portion of the resilifer, and line of visceral retractor scars. 
Localities, 
Fig. 1. Ravenstield Quarry, Farley. 
Fig. 2. „ „ „ 
Fig. 3. Allandale, near West Maitland. 
Figs. 4, 5. Maria Island, Tasmania. 
