285 



Anisoradsia saundersi, Asliby. — Must be withdrawn from 

 its present setting, as it does not belong to this genus; see my 

 paper (loc. cit., Sept., 1920). 



Ischnoradsia australis, Sow. — Should be added to the 

 Queensland fauna, having been collected at Caloundra by Mr. 

 Tom Iredale; it was accidentally omitted from the 1918 List. 

 It should be withdrawn from the Western Australian fauna. 

 I can find no authority for its inclusion; probably it was 

 credited in the printing to Western Australia instead of 

 Queensland. 



Heterozona proper ensis, Ashby. — Add this species to 

 fauna of South Australia; see my paper floe, cit., Sept., 

 1920). 



C allistochiton antiquus, Reeve. — Must be restricted to 

 J^ew South Wales and Queensland. 



C . mawlei, Ire. and May. — Must be elevated to full 

 specific rank and restricted to Tasmania. 



C. meridioncdis, Ashby (Trans. Roy. Soc. S. Austr., vol. 

 xliii., p. 400, Oct., 1919). — Must be added to the List under 

 the fauna of South Australia, Victoria, and Western Aus- 

 tralia; this latter recorded by Torr under the name of 

 antiquus. It should be given full specific rank. 



G. meridionalis inayi, Ashby (loc. cit., p. 410). — Add to 

 List under fauna of Tasmania. It seems necessary to give 

 some explanation as to the method adopted above in the treat- 

 ment of our Callistochitons. 



C. antiquus, Reeve. — Appears to vary very much in 

 Queensland waters. I have specimens from that State in 

 which the adult shell shows no network or ribbing on the 

 dorsal area, but it is smooth; and others, in which nearly the 

 whole of that area shows coarse network; another in which 

 that area is granulose to rugose. As my shells have no locality 

 attached other than Queensland (some were given me by Dr. 

 Torr), I content myself with recording these variations. 



C. mawlei, Ire. and May. — In my paper (loc. cit., Oct., 

 1919, p. 400) I placed this as a sub-species of C. antiquus. 

 Reeve, but the fact therein pointed out that the longitudinal 

 ribbing is present in the dorsal area even in juveniles, whereas 

 it is absent in juvenile antiquus from Sydney, together with 

 the difference in the girdle scales — these are proportionately 

 thicker and rougher and less imbricating in mawlei — justifies 

 us, I think, in giving full specific rank to this species. 



C . meridionalis, Ashby. — Needs no comment beyond what 

 is contained in the original description, except that it should 

 be elevated to full specific rank as therein foreshadowed; but 

 its sub-species, G . mayi, Ashby, seems a rather exceptionally 

 interesting race. I regret I have not had a longer series 



