69 



119rt. Carditella subradiata, Tate, antea, p. 62, Roystoii 

 Head, Yorke Peninsula (Mattheivs). 



121. XJnio Axgasi, Sowerby in Reeve's Icon. Conch., 1868, t. -^^o, 

 f. 282. U. Simttleworthi, Lea, is an older name, but is pre- 

 occupied by another Australian species described by Kuster. 



122. Unio Evansi. U. viUatus, Lea, in Reeve's Icon. Conch., 

 t, 83, seems to represent this species. Lagoons of the River 

 Murray and Lake Alexandrina. Not in New South Wales. 



123. Unio australis, Lamarck. Rivers Para and Onkaparinga. 

 123«. Unio ambiguus, Philippi. Scott's Creek, River Bremer, 



River Murray, Lake Alexandrina, and Mosquito Creek, By 

 some authors this is referred to U. australis, but it differs 

 by its shorter anterior side, less sloping anterior dorsal mar- 

 gin, and by the less ventricosity, especially in the umbo- 

 post-ventral region. 

 151«. PiNXA Tasmanica, Tenison Woods in Proc. Roy. See. 

 Tasmania for 1875. AVedge-shaped, ribbed; ribs towards 

 the margin furnished with a few, irregularly placed, much 

 raised tubular scales. Dead valves dredged in 11 to 15 

 fathoms off Tapley Shoal, St. Yincent Gulf (2IatthfiAcs and 

 McDougaU) ; also Yictoria and Tasmania. 



Class Palliobranchiata, 

 '3a. Magasella Cumingi, Davidson 1852 ; Reeve, Conch, Icon., 

 Terebratula, t. 7, f, 30, Smooth, ovate-oblong, ventral valve 

 much deej)er, with a produced and incurved beak. Length 

 about one-third of an inch. Living examples dredged in 1 1 

 to 15 fathoms off Tapley Shoal (2Iatthetvs and McDougaU ) \ 

 dead shells from 27 fathoms off Encounter Bay ; also New 

 South Wales and Tasmania- 



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