141 
Messrs. Maughan, Torr and Ashby, and Bednall and 
Matthews have brought up the list to fifty-two species, and 
this paper will raise the number to sixty-one identified 
species. Some of the names have had to be changed owing 
to Dr. Thiele and Mr. Tom Iredale’s observations of the 
original specimens of Blainville and others. 
My collection of chitons extends over practically the 
whole of the South Australian coastline from Port MacDonnell 
to Nuyt Archipelago in the Australian Bight. 
The South Australian Polyplacophora include the follow- 
ing families: —Lepidopleuride, Pilsbry; Ischnochitonide, 
Pilsbry; Mopalide, Pilsbry; Acanthochitide, Pilsbry ; 
Cryptoplacide, Dall; and Chitonide, Pilsbry. 
The order of exposure of South Australian Polyplacop- 
hora, mutatis mutandis, is P. albida, Blainville, on exposed 
rocks at or near high-water mark, sometimes accompanied 
by P. costata, Blainville, with P. matthewsi, Iredale, under 
rocks in deeper water. J. crispus is in abundance almost 
everywhere a foot or two below high-water mark, sometimes 
accompanied by Z. thomasi or I. vergatus. The Acantho- 
chites are found in sheltered pools on sandy weed - covered 
rocks. In deeper pools Z. contractus, T. cariosus, I. ustulatus, 
I. sulcatus, and other Ischnochitonidez are found, and deeper 
still Z. smaragdinus, I. ptychius, Lorica volvax, Loricella 
angasi, I. pilsbryt, and most of the true chitons, jugosus, 
tricostalis, exoptandus, calliozona, and torrianus. On the 
west side of St. Vincent Gulf I have found true chitons on 
exposed rocks in shallow pools at low water. J. tateanus, 
C. verconis, A. verconis, and C. bednalli are, as a rule, 
obtained only by dredging. 
Fare as EOF EURIDA, Pilsbry. PAS & 
. Lepidopleurts inquinatus, +847 
- j 
Chiton inquinatus, Reeve, Conch. Icon., sp. 154. 
Ischnochiton inquinatus, Reeve: Pilsbry, Man. Conch., ser. 
i., vol. xiv., p. 90. 
Lepidopleurus liratus, H. Adams and Angas, Proc. Zool. Soc., 
1864, p. 192; Angas, loc. cit., 1865, p. 187;' Pilsbry, Man. Conch., 
ser. i., vol. xv., p. 101. 
L. inquinatus, Bednall, Proc. Mal. Soc., London, vol. ii., 
part 4, April, 1897, p. 141; Sykes, Proc. Mal. Soc., London, vol. 
i., part 2, July, 1896, p. 86. 
Specimens of this diminutive chiton have been found all 
along the coast of South Australia extending from Port 
MacDonnell to St. Francis Island, Nuyt Archipelago. The 
writer has specimens from Corney Point, Wool Bay, Marino, 
bpl gle | 
