212 NOTE ON TEREBRA HEDLEYI, TATE. 



the figure,* the other having the normal anteriorly rounded 

 unchannelled aperture of Cingulina. It is, however, remarkable 

 that Professor Tate should have selected Terehra for the location 

 of this shell with spiral sculpture, a form of ornamentation so 

 uncommon in that genus. If he had suggested Turritella one 

 would not have been surprised. 



I conclusion, I may add that I ver}^ much doubt whether this 

 so-called species is anything more than a variety of Cingulina 

 circinata of A. Adams (also known from Port Jackson), in which 

 the spiral ridges are rather flatter, and the intervening grooves 

 narrower than usual. 



* Proc. Zopl, Soc. London, 1877, pi. v., fig. 5. 



