200 Proceedings of the Royal Society of Victoria. 



Tate's Census of the Molluscfin Fauna of Australia, Trans. Roy. Soc. 

 S.A., XL, pp. 70-81, this genus has once before been reported from 

 Australian Seas. Cuvier, in the " Annales du ]\[useuiu d'histoire 

 naturelle" vol. vi., p. 424, states, "We may add that the com- 

 panions of Baudin saw it (i.e., S. pelagica) near the Terre d'Edels, 

 on the south-west coast of New Holland:" Terre d'Edels was a 

 name triven to the coast of Western Australia, between Swan 

 River and Shark Bay. It is described in Freycinet's "Voyage 

 aux Terres Australes," pp. 1-69-185. 



EXPLANATION OF PLATE. 



Fig. 1. — Enlarged outline sketch of L. 7iigrita alive and gliding, 



viewed from the side. 

 Pio-. 2. — The same viewed from beneath, showing the head with- 



di'awn under the mantle. 

 Fig. 3. — Type of L. Fritcliardi, from the side, natural size. 

 Pig. 4. — Another specimen of the same from above, natural size. 

 Fig. 5. — Shell of a third specimen of the same from above, 



natural size. 

 Fig. 6. — Shell of a third specimen of the same from the side, 



natural size. 



Fig. 7. — Radula of L. Priichardi, magnified. 



All figures drawn from life by the writer. 



