Fossil Fauna, Table Cape Beds, Tasmania. 113 



With some of tlie larger forms of A^. iviiitlei it agrees some- 

 what in umbilical and apertural characters, but does not appear 

 to have any funicular ridge or rib, a feature usually most notice- 

 able in medium-sized specimens of that species. In the charac- 

 ters of this region it makes a closer approach to N. aldingensis, 

 but the umbilicus is not so open or so deep. In the shape of the 

 body-whorl it again approaches A', aldingensis rather than iV^ 

 wintlei, but differs most markedly from both these species in its 

 very short, small, and depressed spire of about the same number, 

 though much more flattened and hidden whorls. I have not 

 been able to make out any distinct spiral threading or ornament, 

 but fine centrifugal lines of growth and parallel stri;e are very 

 well-marked on the spire and body- whorl. 



66. Calyptpsea subtabulata, Tate. 



Trochita calyptrceformis, Johnston {iion Lamarck, nan Deshayes) 

 P.R.S.Tas., 1876, p. 86, and Geo. Tas., 1888, pi. xxix., figs. 

 14, \ia. 



? Pileopsis navicelloides, Johnston, P.R.S.Tas., 1879, p. 39. 



Calyptrcea subtabulata, Tate, Gast. IV., 1893, p. 332, pi. vii., 

 fig. 1. 



67. Turpitella warbuptoni, T. Woods. 



T. warburtoni, T. Woods, P.R.S.Tas., 1876, p. 99. 



T. sturiii, T. Woods, loc. cit. 



T. warburtoni, Tate, Gast. IV., 1893, pp. 337, 338, pi. viii., 



fig- 2. 



T. sturtii, Tate, loc. cit., pi. viii., fig. 6. 



Observations. — Professor Tate's description of this species 

 differs from the original description of Tenison Woods, noticeably 

 in that the latter lays a certain amount of stress upon the 

 presence of " two smooth conspicuous ribs at the lower part of 

 each whorl, with others very fine and of varying size above ; " 

 whereas Professor Tate describes the species as bearing "two 

 anterior ribs more or less granulose, each of the interspaces 

 between the keels with two or three fine threads of varying size." 

 It is evident from this that Professor Tate saw some variation 

 in this species which he thought fit to draw attention to in the 

 above manner. At the same time the fact has been overlooked 



I 



