T0REITELLA. 239 



Dimensions. — Length 27 mm.; breadth 10 mm.; length of 

 aperture 6 mm. 



Form, and Loc. — Eocene : Aldinga, South Australia. 



G. 9424. Four examples illustrating stages of growth. Purchased. 

 Turritella •warburtoni, Tenison-Woods. 



1877. Turritella warburtonii, Tenisoii-"Woo(is, Pap. Eoy. Soc. Tas. 1876, 

 p. 99. 



1877. Turritt'lla stiirtii, Tenison-Woods, id. p. 99. 



1878. Turriiella ivarburtonii, E. Etheridge, jun., Cat. Aust. Foss. p. 169. 

 1878. Turritella sturtii, E. Etheridge, jun., id. p. 169. 



1893. Turritella tvarburtoni, Tate, Trans. Eoy. Soc. South Aust. vol. xvii. 



pt. 2, p. 337, pi. ■riii. fig. 2. 

 1893. Turritella sturtii, Tate, id. p. 338, pi. viii. fig. 6. 

 1895. Turritella ivarburtoni, Pritchard, Proc. Eoy. Soc. Vict. vol. viii. x.s. 



p. 113. 



Mr. Pritchard, in the work above cited, has discussed the 

 synonymity of T. sturtii with T. warburtoni at some length. The 

 chief difterences noticeable in the two so-called species are mere 

 details of ornament of the whorls, which certainly are not 

 important enough to warrant specific separation in such variable 

 forms as we are now dealing with. 



Dimensions. — Length 18 mm. ; breadth 5 5 mm. 



Form, and Doc. — Eocene : Table Cape, Tasmania. 



G. 9425. Three examples of the adult. Purchased. 



G. 9426. Examples of the neanic stage of growth. Purchased. 



Turritella gemmulata, Tate. 



1893. Turritella gemmulata, Tate, Trans. Eoy. Soc. South Aust. vol. xvii. 

 pt. 2, p. 338, pi. viii. fig. 11. 



The distinct, rounded granulations on the four or five spiral 

 carina?, which occupy the greater part of the whorls, serve to 

 distinguish this minute shell at a glance from amongst other 

 Australian forms of the genus alluded to in this work. 



Dimensions. — Length 7 mm. ; breadth 2 mm. 



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



G. 9422. Several specimens. Purchased. 



