190 



Taken at the Glenelg River, Lacepede Bay, Edithburgh, 

 St. Francis Island, and Le Hunte Bay, i.e., the whole length 

 of the South Australian coast where examined. It was not 

 found in Western Australia. 



Variations consist in the stoutness of the spiral cords, and 

 especially in the prominence of the spiral ridge above the row 

 of holes; this may be barely perceptible, or it maybe so 

 marked as to resemble H. tricostalis — in fact, it is open to 

 question whether H. emmce is not the eastern variant of the 

 western H. tricostalis. 



Haliotis tricostalis, Lamarck. 



Haliotis tricostalis, Lamarck, Anim. S. Vert., 1882, p. 218. 



This species was recorded for South Australia in Adcock's 

 Handlist of Aquatic Mollusca, South Australia, 1893, p. 9, 

 No. 373, as Haliotis (Padollus) rubicundus, Montfort, with 

 tricostalis, Lamarck; canaliculata, Schbt. and Wag.; scalaris, 

 Leach, as synonyms. I have not taken it in South Australia, 

 and do not know that it has been collected here. Some of our 

 examples of H. emmce, Gray, approach it. Swainson, in 

 Proc. Roy. Soc, Tasmania, 1855, p. 48, speaking of Reeve's 

 Mon. of the genus in Conch. Icon., says, U H. tricostatus 

 (meaning tricostalis), H. pulcherrima, Auct., and our Haliotis 

 costata, here erroneously called H. emmce," evidently regard- 

 ing all four as conspecific ; whereas Pilsbry makes tricostalis, 

 pulcherrima, costata (a synonym of rugosoplicata) and emmce 

 four distinct species. 



Haliotis parva, Linne. 



Haliotis parva, Linne,, Sys. Nat., vol. x., p. 780; Gmelin, 

 Sys. Nat., 1789, Tome i., vol. vi., p. 3689, No. 7; Pilsbry, Tryon, 

 Man. Conch., 1890, vol. xii., p. 120, pi. xiv., fig. 74; Adcock, 

 Handlist Aquatic Moll., South Australia, 1893, p. 9, No. 374. 



Adcock records it for South Australia, but no authentic 

 specimen from our shores is known. 



Haliotis pulcherrima, Martyn. 



Haliotis pulcherrima, Martyn, Univ. Conch., pi. lxii., 

 Pilsbry Tryon, Man. Conch., 1893 vol. xii., p. 124, pi. xiii., fig. 

 69; Adcock, Handlist Aquatic Moll., South Australia, 1893, p. 9, 

 No. 371. 



Pilsbry gives South Australia as one of its localities, and 

 Adcock records it, but no authentic specimen from our shores 

 is known. 



Haliotis rugoso=plicata, Chemnitz. 



Haliotis rugoso-plicata, Chemnitz, Conch. Cab., vol. x. p. 311, 

 figs. 1603, 1604, 1604a; Pilsbry, 1890, vol. xii., p. 110, pi. xx., 

 figs. 12, 13. ' ' F ' 



