BY W. L. MAY. 79 



ISCHNOCHITON USTULATUS, Reeve. 

 Op. cit., species 102. 



Common with the last. Varies* somewhat from South 

 Australian specimens. 



CHITON ORUKTUS, Maughan. 



T.R.S., S. Aus., 1900, p. 89. 



Numerous in Port Arthur, also Wedge Bay and Little 

 Taylor's Bay. It attains a much greater size than in S. Aus- 

 tralia, some specimens being upwards of 23 mill, in length. 



CHITON AUREOMACULATUS, Bednall and Mathews. 



P. M.S., London, Vol. VII., pt. 2, 1906, p. 91, PI. IX., 

 f. 3. 



Three examples collected in Port Arthur by E. Maule 

 I think it possible that this is the young form of C. tri- 



•OCStfljllS 



LORICA VOLVOX, Reeve. 



Conch. Icon., sp. 31. 



Furneaux Group, several examples ; also Port Arthur, 

 where they are particularly fine ; also in Norfolk Bay. 



ACANTHOCHITON KIMBERI, Torr. 

 T.R.S., S. Aus., 1912, Vol. XXXVL, p. 167, PI. VI., 

 figs. 5a-6. 



Several specimens taken in Port Arthur. 



ACANTHOCHITON RUBROSTRATUS. Torr. 

 Op. cit., p. 169, PI. VII., fig. 7 a-f. 



Port Arthur, Wedge Bay, Little Taylor's Bay. Closely 

 resembles A. costatus, Adams and Angas. 



LEUCONOPSIS PELLUCIDUS, Cooper. 



Micro. Jour., 1 Jan., 1841, p. 16. Types from Van Die- 

 men's Land. 



This is the species wrongly identified as 0. minor, 

 Mouss., in Tate and May, page 420. Occurs also at Bar- 

 ren Island. 



HYDATINA EXIGUA, Hedley. 



R.A. Mus., Vol. VIIL, p. 158, PL XLV„ f.~46. 



A specimen was collected by Miss Lodder on the North 

 "Coast, who wrongly identified it as Altera tasmanica, Bed- 

 dome under which name it was figured bv Hedlev, P.L.S., 

 N.S.W., 1901. 



DENTALIUM VIRGULA, Hedley. 

 M.A. Mus., Vol. IV., 1903, p. 338, fig. 62. • 

 A number taken in 50-70 fathoms off Port Arthur. 



