BY C. HEDLEY. 531 



Having stated the case for the specific name, that of the genus 

 now requires consideration. The first used was Clava, but Dall* 

 has shown that this name should be restricted to the group 

 usually called Vertagus. Bruguiere placed it in Cerithium, the 

 modern limits of which are too narrow to include his C. eheninum. 

 Reeve and subsequent authors include our species in Potamides, 

 a genus framed for a French Tertiary fossil. The original refer- 

 ences to this genus are not within my reach, but I find that 

 according to Agassiz.f the publication of Potamides by Alex. 

 Brongniart| dates only from 1822. But P. herculeus is the type 

 of Pyrazus instituted in 1810, hence even if, as most authors 

 consider, Potamides and Pyrazus refer to one genus, then Pyrazus 

 must take precedence. 



The animal was described and figured by Quoy and Gaimard.§ 

 Tenison Woods gave some account of the radula and eye.|| The 

 nervous system and other anatomical features were examined by 

 E. L. Bouvier.1T 



As a subfossil it was recorded from the neighbourhood of 

 Brisbane by Jack and Etheridge;** from Maitland, N.S.W., by 

 David and Etheridge,tt and from Shea's Creek by Etheridge,. 

 David and Grimshaw.JI 



No doubt the species was largely used as food by the coast 

 natives. The aborigines of Moreton Bay, Queensland, called the 

 species Toondah.§§ It was found by Anderson|||| in kitchen 

 middens on the Wagonga River, N. S. Wales. Waite notesUlI that 



* Trans. Wagner Inst. Sci. iii. 1892, p. 290. 



t Nomenclator Zoologicus, 1842, MoUusca, p. 74. 



:j: Description g^ologique cles couches des environs de Paris. 



§ Voy. Astrolabe, Zool. iii. 1834, p. 123, pl.lv., f.1-3. 



II Journ. Roy. Soc. N. S. Wales, xxii. 1888 (1889), p. 150, pl.iv., f.4; pi. v. 



f.6'; pi. vi., f.7. 



^ Ann. Sci. Nat. (7), Zool. iii. 1887, p. 142, pi. vii., f.28, copied Perrier 

 Traits Zool. iv. 1897, p.20.S6, f.1473. 



** Geol. and Paleont. Queensland, 1892, p. 642, pi. xxxvi., f. 14-16. 



+t Rec. Geol. Survey N. S. Wales, ii. 1890, p.48. 



tt Journ. Roy. Soc. N. S. Wales, xxx. 1896(1897), p. 169. 



§§ S. Kent, Great Barrier Reef, 1893, p. 253. 



till Rec. Geol. Survey N. S. Wales, ii. 1890, p. 56. 



HIT These Proceedings (2), ix. 1895, p.562. 



