198 



SEMICASSIS. 



Diiiie»sioiis. — Length 45 mm.; breadth 33 mm.; length of 

 aperture and canal 40 mm. 



Form, and Loc. — Eocene : Muddy Creek, Victoria. 

 G. 4178. Example of the neanic stage of growth. 



Presented ly Juhn Dennant, Eaq. 

 G. 5504. An example of the adult. Purchased. 



Cassis, sp. 



The following specimens in the Museum collection are 

 indeterminable specifically, and are all in the state of casts : — 



G. 9646. A narrow form, nodose at the subangulation of the 

 body-whorl near the suture ; from the Tertiary of Willunga, South 

 Australia. S. Y. L. Brown Coll. 



G. 9636. Cast of Cassis, or Bolium, having much depressed 

 spire, and the whorls broadly sulcated ; from the Eocene of 

 Oamaru, jN'ew Zealand. S>ir James Heetur Coll. 



G. 9640. Casts of a species allied to C. exigua, Tenison-Woods ; 

 from the Tertiary of Nullarbor Plain, South Australia. 



H. Y. L. Brown Coll. 



G. 9658. Cast of a large varicose species, with ventricose body- 

 ■whorl and short spire ; from the Tertiary of NuUarbor Plain (Price 

 Maurice's well), South Australia. H. Y. L. Brown Coll. 



Genus SEMICASSIS (Klein), Miirch. 

 [Cat. Yoldi, fasc. i. 1852, p. 112.] 



Spire promraent ; whorls spirally sulcate and lineate ; aperture 

 large ; outer margin reflected, dentate ; columella plicate and often 

 granulate. 



Tu2}e. — Cassis japonica, Reeve. 



Semicassis SUfflata, Tenison-Woods (sp.). 



1877. Cassis svfflaUis, Tenison-Woods, Pap. Eoy. Soc. Tas. 1876, pp. 9.3, 94. 

 1889. iSeinicitssis transenna, Tate, Trans. Roy. Soc. South Aust. vol. xi. 



p. 166, pi. viii. tig. 2. 

 1896. Semicassis sujlatus, Pritchard, Proc. Eoy. Soc. Vict. vol. viii. n.s. 



p. 106. 



