722 STUDIES OS AUSTRALIAN MOLLUSCA, xii., 



not accessible to me. But it is plain that this second edition 

 was entirely rewritten, and does not represent the nomenclature 

 of the first edition of 182*2, For Ferussac, minutely reviewing 

 the first four parts of the " Exotic Conchology," failed to note 

 ScapheUa or Cymbiola.^ Even in 1824, Swainsonf had not 

 decided on the generic subdivision of the Volutid?e. 



The original reference to Scai^heUa enumerated S. undnlata, 

 jitnonia, maculata, and zeby^a as typical species, and papiUaris 

 ( =/S'. papulosa Swainson, 1822, not papillaris Borson, 1820) and 

 ehngata {arabica AJartj-n var.) as aberrant species. Afterwards, 

 in his "Treatise on Malacology,'' 18-iO, p.3 18, Swainson redefined 

 the genus, and included in it, fusiformis, undulata, volvacea, 

 zebra, junonia, and papillosa; "the best known type" being(p.l07) 

 *S'. 7i7ididata Lamarck. Thus compounded, the genus covered, 

 more or less, Amoria Gray, Maculopepluni Dall,:j: and Ericusa 

 H. & A. Adams. Of these, the first should apparently sink as a 

 synonym: Amoria Gray, was introduced in 1855, with Voluta 

 turner i as the first species generally accepted as* type. It is 

 noteworthy that ScapheUa volva Gmelin, var turneri Griffiths & 

 Pidgeon, as originally figured,§ is not the form given under that 

 name by Reeve, Sowerby, and subsequent authors, and is perhaps 

 Amoria broderipi Gray.|| Under the name of Voluta undidata 

 Lamarck, Swainson seems to have figuredU not that, but ScapheUa 

 volva var. elliotti Sowerby. 



I suggest that the following Australian shells should be ranked 

 under ScapheUa: canaliculata McCoy, exoptanda Sowerby, gatlijfi 

 Sowerby, hedleyi Iredale, maculata Swainson, maria-emma Gray, 

 nioslemica Hedley, prcetexta Reeve, spenceriana Gatliff, studeri 

 Martens, translucida Verco, undidata Lamarck, volva Gmelin, 

 and its numerous varieties, zebra Leach. 



* Ferussac, Bulletin des annonces nouv. sclent., ii., 1823, p. 66. 



t Swainson, Quart. Jouru. Sci., xvii., 1824, p.31. 



+ Dall, Smithson. Miscall. Coll., Vol.48, 1907, p.370. 



§ Griffiths & ridgeon, Anim. Kingdom, xii., 1834, p. 601, P1.40, f.l. 



II Gray, Ann. Mag. Nat. Hist.,(3), xiv., 1864, p.237. 



^Swainson, Exotic Conchology, Part iv., 1823, PI. 27. 



