Fossil Fauna, Table Cape Beds, Tasmania. 115 



whorls. We have in this particular an exactly parallel case in 

 the succeeding species, T. iniirrayana, and in the latter case it is 

 extremely readily detected, as it is on a so much larger scale. 



68. Tuppitella muppayana, Tate. 



Torcula niurrayana, Tate, P.R.S.Tas., 1884, p. 227. 



Tiirritella iimrrayana, Tate, Gast. IV., 1893, pp. 340, 341, pi. 

 viii., tig. 3. 



Observations. — The variation to which this species is subject 

 has already been dealt with to a certain extent by Professor Tate 

 in his Part IV. of our Tertiary Gastropoda ; but as my study of 

 this collection of Table Cape Fossils has led to the consideration 

 of forms varying beyond the limits already expressed, I think it 

 well to include here the additional observations. 



In the typical form, according to Professor Tate's description, 

 there are twelve to fourteen whorls, an apical angle of about 15 

 deg., length 60 mm., breadth 17 mm. Professor Tate also notes 

 that the Table Cape form is usually proportionately broader, the 

 apical angle being as much as 18 deg. The specimens I now 

 have under examination from the same locality show a much 

 greater extreme in this direction, for in ten whorls the length is 

 86 mm. and the breadth 30 mm., while the apical angle is 22 deg. 

 Another example of ten whorls, though still widely divergent 

 from the type, shows a slight diminution in measurements from 

 the preceding, in that its length is 70 mm., breadth 26 mm., 

 and apical angle 21 degrees. 



While dealing with this point it may not be out of place to 

 record further variation in the opposite direction. In this case 

 the specimens come from the eocene beds of Shelford, near 

 Geelong, and are extremely slender, many-whorled forms, ex- 

 amples with sixteen whorls being 71 mm. in length, while only 

 15 mm. in breadth, and with an apical angle of only 12 degrees. 



The above seems to my mind to give additional confirmation, 

 if any were requisite, for the way in which I have dealt with 

 T. ivarbiirtoni, T. Woods. 



69. Tuppitella conspicabilis, Tate. 



T. conspicabilis, Tate, Gast. IV., 1893, p. 339, pi. viii., fig. 7. 



i2 



