140 



PEOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



until the publication of Mr. Pilsbry's work on the Polyplacophora in 

 the Manual of Concliology that the way was cleared for me. By 

 a careful study of this work as a whole I was soon enabled to refer 

 my specimens to their proper genera, and I further obtained a fair 

 grasp of their specific value. Ascertaining, too, from the Manual, 

 that some of our species were but little known in Europe and America, 

 and others again quite unknown to Mr. Pilsbry, I submitted my 

 material to him for inspection. Many of our shells were discovered 

 to be quite new, and the number of South Australian Chitons is now 

 considerably increased. The correspondence with Mr. Pilsbry has 

 enabled me to compile the present list of species, and I may here tender 

 my acknowledgment for the invaluable help he has rendered me. 

 Moreover, without the co-operation of Mr. E. H. Matthews, of Yorke 

 Peninsula, the work could not have been satisfactorily accomplished, 

 for the bulk of the collecting has devolved upon him. To Professor 

 Tate, Mr. D. J. Adcock, and Dr. J. C. Verco, I am also indebted for 

 valuable aid. 



The following is a detailed list of all the Chitons that are credited 

 to the province of South Australia, the coast-line of which extends 

 from Eucla in the west, to Cape Northumberland, near its eastern 

 boundary, and includes Spencer and St. Vincent's Gulfs : — 



Zepidopleurus inquinatus (Eeeve). 

 Callochiton platessa (Gould). 

 Ischnochiton juloides, Ad. & Ang. 



PiUhryanus, Bednall. 



cariosus, Pilsbry. 



PiJslryi, Bednall. 



ustidatus (Reeve). 



crispus (Reeve) [= C. longi- 



cymha^ auct. non Blainv.]. 



fruticosus (Gould). 



contractus (Reeve). 



variegatus (Ad. & Aug.). 



decussatus (Reeve). 



pty chilis, Pilsbry. 



Tateanus, Bednall. 



smaragdinus (Angas). 



virgatiis (Reeve). 



Thomasi, Bednall. 



Novcc-UollandicE, (Gray). 



Callistochiton antiquus (Reeve). 

 Chiton tricostalis, Pilsbry. 



Chiton calliozona, Pilsbry. 

 jugosus, Gould. 



Coxi, Pilsbry [= C. concen- 



tricHs, Bedn. non Heevej. 



exoptandus, Bednall. 



Bednalli, Pilsbry. 



Lorica volcox (Reeve). 

 Loricella Angasi (Ad. & Aug.). 

 Plaxiphora petholata (Shy.). 



conspersa (Ad. & Aug.). 



gJauca (Quoy & Gaim.) [=-P. 



ciliata, Ang. non Shy.]. 

 Acanthochites ashestoides (Smith). 



Bednalli, Pilsbry. 



granostriatus, Pilsbry. 



speciosus (H. Ad.). 



Matthewsi, Bednall & Pilsbry, 



variahilis (Ad. & Aug.). 



Cryptoplax striatus (Lamk.), var. 

 Gunnii. 



Species whose Occurrence is Doitbtful. 



Ischnochiton Adelaidensis (Reeve). Acanthochites Zelandicus (Quoy 

 Chiton limans, Sykes [= C. muri- Gaim.). 



catus, Ad. non Tilesius]. scutiger (Ad. & Reeve). 



tulipa, Quoy & Gaim. Burrowi (Smith). 



