Fossil Fauna, Table Cape Beds, Tasmania. 87 



several respects from the typical form of F. decipiens, from Muddy 

 Creek, and has suggested that it may Ije desirable when fuller 

 material is at hand to ^^pply distinctive names to them. The 

 material now before me does not seem to justify more than a 

 varietal distinction for the Table Cape form, which only diflers 

 from the ordinary Muddy Creek type of the species in that it has 

 a shorter spire, and is a I'elatively broader and more ventricose 

 form. 



17. Peristernia transenna, T. Woods. 



Fusus transennus, T. Woods, P.R.S.Tas., 1876, p. 94. 

 Peristernia transemia^ Tate, Cast. I., 1888, p. 157, pi. xi., 

 fig. 10. 



18. Pepisternia affinis, Tate. 

 P. affinis, Tate, Cast. I., 1888, p. 157, pi. xi., fig. 7. 



19. Peristernia aldingensis, Tate. 



P. aldingensis, Tate, Gast. I., 1888, p. 156, pi. viii., tig. 8a, 8/'. 



Observations. — I have very little hesitation in referring the 

 present Table Cape specimens to the above Aldingan species, as 

 I have made careful comparisons not only with Professor Tate's 

 original description and figures of the shell, but also with actual 

 examples of the species from the type locality. Judging, how- 

 ever, from the figures and the dimensions given by Professor 

 Tate, and the specimens from Aldinga in my own collection, the 

 Table Cape specimens are of larger dimensions and are much 

 more solid shells, the dimensions of the; latter being as follows : — - 

 Length (embryonic whorls and end of canal incomplete), 51 mm. ; 

 breadth, 22 mm. ; length of aperture, 16 mm. ; breadth of aper- 

 ture, 10 mm. ; length of canal (incomplete), 9 mm. 



20. Peristernia murrayana, Tate, var. costata, var. nov. 

 Plate II., fig. 4. 



P. murrayana, Tate, Gast. I., 1888, p. 155. 



Observations. — There are ten examples of this shell in the 

 collection, and after careful study I cannot regard it but as a 

 variety of P. murrayana, Tate, a very common fossil in the 



