97 



6. ISCHNOCHITON CONTRACTUS, Reeve. 



Chiton contractus, Reeve, Conch. Icon., sp. 78; Pilsbry, 

 Man. Conch., ser. i., vol. xiv., p. 93. 



Chiton pallidus, Reeve, Conch. Icon., sp. 92; Pilsbry, Man. 

 Conch., ser. i., vol. xiv., p. 89. 



Fairly common in sheltered pools on the south coast. 

 I have specimens from Hopetoun and Albany. 



7. Ischnochiton decussatus, Reeve, 1847. 



Chiton decussatus. Reeve, Conch. Icon., sp. 107; Pilsbry, 

 Man. Conch., ser. i., vol. xiv., p. 93. 



Chiton castus, Reeve, Conch. Icon., sp. 145. 



Lepidopleurus speciosus, H. Adams and Angas, Proc Zool. 

 Soc, 1864, p. 192. 



Two specimens were taken from buoys between Fremantle 

 and Rottnest Island. Through the courtesy of the harbour- 

 master we were permitted to be present at the lifting and 

 cleaning of the buoys. /. decussatus is frequently found 

 attached to such shells as Pinna inermis, Tate. 



8. Ischnochiton ptychius, Pilsbry. 

 Ischnochiton ptychius, Pilsbry, Nautilus, vol. viii., p. 53. 

 Ischnochiton ptychius, Bednall, Proc. Mai. Soc, vol. ii., part 

 4, April, 1897. 



One specimen of this rare chiton was taken from the 

 anchor of a buoy between Fremantle and Rottnest Island. 



9. Ischnochiton virgatus, Reeve. 



Chiton virgatus, Reeve, Conch. Icon., sp. 192; Pilsbry, Man. 

 Conch., ser. i., vol. xiv., p. 78. 



Several specimens were found at the Quarantine Station, 

 Albany. Some of my specimens are of a creamy-white, which 

 may possibly need to be placed under a new species. 



10. Ischnochiton thomasi, Bednall, 1896. 



Ischnochiton Thomasi, Bednall, Proc. Mai. Soc, London,, 

 vol. ii., part 4, April, 1897. 



One diminutive specimen was dredged from 20 fathoms 

 in Geographe Bay. 



11. Ischnochiton resplendens, Bednall and Matthews, 



1906. 



Ischnochiton resplendens, Bednall and Matthews, Proc. Mai. 

 Soc, London, vol. vii., part 2, June, 1906. 



Several specimens of this beautiful chiton were taken at 

 Yallingup, and an anterior valve at Ellenbrook, both south 

 of Cape Naturaliste, and also at Albany. No specimen of 

 its close ally I. sinarar/dinus was seen. 



