Victorian Chitons. 157 



narrower and more closely packed. The lateral areas are much 

 raised, similar in sculpture to the other areas, but radial, the 

 lines of growth in this area are marked by very coarse, concen- 

 tric ribbing, or undulations, differing but little in this respect 

 from those of liratus, Adams and Angas. In some of the valves 

 the sculpture, especially towards the posterior margin, is smooth 

 and highly polished, in this respect coinciding with the New 

 Zealand shell. 



The largest specimen, without the girdle, which is too incurved 

 to measure, is 26 x 7 mm. In this specimen, the granules are 

 more defined, especially in the lateral areas, and the smooth, 

 highly polished character seemed absent. 



Girdle. — While some of the specimens, in addition to the girdle 

 fringe, have a few scattered spicules, the largest is almost free 

 from them. The girdle in all is covered with minute scales, 

 which are well described under the term arenaceous, the term 

 used by Reeve. In this they differ from the preceding species, 

 and still more widely from the Neozelandic shell. 



In conclusion. — Mr. W. L. May has been good enough to lend 

 me a specimen which he dredged in 15 fathoms in the Schouten 

 Passage, Tasmania, adhering to shell. This is identical with the 

 Port Phillip shells under review, although the girdle is a little 

 more spiculose. 



I cannot see any justification in assuming that Reeve's locality 

 of Tasmania was a mistake, and that it should have been New 

 Zealand. The character he gives of the girdle scales certainly 

 fits this form, and not the Neozelandic shell. The only difficulty 

 is the omission in the original description of any mention of 

 spicules in the girdle. This may easily be accounted for as in some 

 specimens they seem barely present at all. I therefore propose 

 to reinstate Reeve's inquinatus, giving as its habitat, deepish. 

 water in Tasmania, Victoria and South Australia. 



Lepidopleurus iredalei, n.sp. 



The recognition of Reeve's Chiton inquinatus as one of the 

 Australian shells, makes it necessary to describe the New Zea- 

 land shell under a new name, and as Mr. Tom Iredale's remarks 

 before quoted, are a contributing factor towards the recognition 

 of Adams and Angas' L. liratus, I think it is only just that the 

 Neozelandic shell, which has so long been known under the name 

 of L. inquinatus. Reeve, should bear Mir. Iredale's name, and. 

 therefore I have pleasure in calling it after him. 



