290 



(I quote Ad. and Angas' own words), whereas in ruhroBtratuSy 

 Torr, the girdle is densely beset with coarse spicules. I 

 therefore propose to withdraw the genus Macandrellus from 

 our Australian fauna, placing costatus, Ad. and Angas, with 

 ruhrostratus, Torr, as its sub-species, under the genus 

 Notoflax. 



I should have liked to have retained D all's genus, with 

 which we have become so familiar, citing the New Zealand, 

 shell Macandrellus violaceus, Quoy and Gaimard, as the type; 

 but I fear that we must make another change and revert back 

 to Pilsbry's genus Loboplax, of which violaceus, Quoy and 

 Gaimard, is the type. 



To sum up the position, D all's genus Macandrellus falls 

 with the transference of his type to the sub-genus Notoplax. 

 The New Zealand shell. Chiton violaceus, Quoy and Gaimard, 

 becomes Loboplax violaceus. 



Dr. Torr's Acanthochiton suh-viridis and H. Adams' 

 speciosus are both closely related to costatus, Ad. and Angas, 

 and ruhrostratus, Torr, and should be placed adjoining these 

 two forms in the Classification List. 



Notoplax porcina, Ashby (loc. cit., Oct., 1919, p. 395). — 

 Add this species to list, the closely-packed, rounded granules 

 of the lateral areas of juvenile N. matthewsi, Bed. and Pilsbry, 

 are evidently absent in this species, and should with its other 

 characters lead to its easy recognition. 



N. wilsoni, Sykes. — Add to New South Wales fauna, was 

 accidentally left out of the 1918 List for New South Wales; 

 also include in the Western Australian fauna in place of 

 verconis, which is a synonym. 



Acanthochiton tatei, Torr and Ashby, and A. hakeri, 

 Torr, as previously stated must both be dropped. 



Rhyssoplax torrianus, Hed. and Hull. — Withdraw from 

 Tasmanian fauna. 



R. hednalli, Pilsbry. — Add this to Victorian fauna 

 recorded by Sykes. 



B. limans, Sykes. — Withdraw this name and replace with 

 R. jacksonensis, Ashby, and restrict to fauna of New South 

 Wales and Queensland; see my paper (loc. cit., Proc. Vict. 

 Hoy. Soc, vol. xxxiii., Nov., 1920). 



R. corj/pheus, Hed. and Hull. — Withdrawn from Aus- 

 tralian fauna; Norfolk Island and Lord Howe Island species. 



R. vauclusensis, Hed. and Hull. — I cannot find any record 

 of this species from Queensland, and think it must have been 

 included in the fauna of that State in my 1918 List in error. 



R. coccus, Menk. — Should be placed with the doubtful 

 ■chitons; it seems questionable as to whether it is Australian 

 at all. 



Al 



