191 



Lotorium protensum, Tate (sp.). 



1888. Triton profoisus, Tate, Trans. Eoy. Soc. South Aust. vol. x. p. 124, 

 pi. V. fig. 10. 



The oniament of the whorls of this species is somewhat similar 

 to that of L. woodsi ; but the shell is much narrower. 



Dimensions. — Length 32 mm.; bi'eadth 14-5 mm. ; length of 

 aperture 9 mm. ; length of canal 8 mm. 



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



G. 4268. An example of the adult. 



Presented hy John Dennant, Esq. 



Lotorium. tortirostris, Tate (sp.). 



1877. Triton minimum, Tenison-Woods, Pap. Eoy. Soc. Tas. 1876, p. 107 



[non Hutton). 

 1888. Triton tortirostris, Tate, Trans. Eoy. Soc. South Aust. vol. x. p. 123, 



pi. V. fig. 7. 

 1888. Tritonium minimum, Johnston, Geol. Tasmania, p. 237. 

 1893. Triton tortirostris, Tate and Dennant, id. vol. xvii. pt. 1, p. 219. 

 189.5, Triton tortirostris, Pritchard, Proc. Eoy. Soc. Yict. vol. viii. n.s. 



p. 82. 



Of the same general character as L. woodsi, but readily dis- 

 tinguished in having a different type of protoconch, which in 

 this species is roundly turbinate, composed of three and a half 

 turns, spirally striated, commencing in the centre and gradually 

 increasing in size, instead of being excentric, and commencing 

 as an elevated point, as in L. woodsi; further, the anterior canal 

 is much shorter, and there are three spiral rows of small, trifid 

 nodulations on the body-whorl. 



Dimensions. — Lengtli 30 mm.; breadth 16*5 mm. ; length of 

 aperture 10 mm. ; length of canal 8'5 mm. 



Form, and Loc. — Eocene : Tasmania, Victoria, and South 

 Australia. 



83987. An example of the adult ; from Table Cape. Purchased. 



G. 9124. A local variation, in which the nodulations on the 

 periphery of the body-whorl are more pronounced than in the 

 type, and are arranged to form longitudinal costre ; from the River 

 Murray, near Adelaide. Presented hy William Ecans, Esq. 



G. 9399. Examples of stages of growth ; from Muddy Creek. 



Purchased. 



