390 RALPH TATE. 
Subgenus Lrosaria, Troschel. 
This name is in substitution for Aricia, Sowerby, 1832, non 
Savigny; it includes C. gigas, C. platypyga, C. consobrina, 
C. gastroplax as indicated by McOoy, also C. dorsata, Tate. 
Subgenus Umbilia, Jousseaume. 
Includes as already indicated by me, C’. eximia, Sow., C. sphe- 
rodoma, Tate, C. toxorhyncha, Tate. 
Subgenus Gaskoinia. 
This is an additional member of the family now recorded for 
the first time. 
GASKOINIA BULLZFORMIS, spe. nov. (Plate 109, fig. 5.) 
Shell globosely oval, smooth ; spire concealed ; aperture as long 
as the shell, with slightly produced extremities, relatively wide, 
somewhat narrowed and rounded behind, truncate in front with 
a wide shallow sinuosity ; outer lip broadly thickened all round 
on the inner margin. Length 44-5, breadth 30 mm. 
Eocene, Muddy Creek (one example). 
Excluded species, C. ovulatella is transferred to Trivia. 
Genus Lrato. 
Subgenus Lratopsis. 
One species is described from the Victorian Miocene.! 
Family OvuLipa. 
The name Ovula is for the present expunged from our list and 
Simnia (Neosimnia) takes. the place of Calpurna, one species is 
described from the Victorian Eocene. 
Family Cassipipm. 
Genus Morio, Montfort, 1810. 
This name is in substitution for Cassidaria, Lamarck, 1812. 
Family Stromsipa. 
Genus Strombus. 
Mr. Harris describes a fossil from the Fowler Bay district of 
South Australia as Strombus denticostatus; the horizon is unknowD 
1 Trans. Roy. Soc. South Australia, p. 217, 1890. 
