404 



DESCRIPTION OF PLATES. 



Plate XLI. 

 Australian Polyplacophora. 



Fig. 1. Acanthochiton pilsbryi, Sykes, xlO, from S. Austr. 

 ,, 2. ,, ,, , } , x23, type, median valve » 



,,3. ,, ,, ,, x23, from S. Australia,. 



median valve. 

 ,, 4. ,, ,, maughaneanus, Ashby, x28,. 



median valve. 

 maxillaris, Ashby, x28, posterior valve. 



,, „ ,, median valve. 



porcina, Ashby, xlf. 



,, ,, x6, anterior valve. 



,, ,, ,, median valve. 



,, j, ,, posterior valve. 



Plate XLII. 

 Australian, Polyplacophora. 



Acanthochiton maxillaHs, Ashby, xlO. 

 ,, gatliffi, Ashby, xll. 



,, ,, ,, x28, anterior valve. 



j, ,, ,, ,, posterior valve. 



,, ,, ,, ,, median valve. 



Callistochiton antiquus, Reeve, x!5, median valve, from 



New South Wales. 

 ,, ,, meridionulis , Ashby, xl5, 



median valve, from S. Austr. 

 ,, ,, mayi, Ashby, xl5, median 



valve, from Tasmania. 

 ,, ,, ,, Ashby, x!5, anterior 



v'alve, from Tasmania^ 



, , u. 



)) 



„ 6. 



)) 



M 7. 



>j 



„ 8. 



j? 



„ 9. 



}) 



„ io. 



>> 



'ig. 



1 



2, 

 3. 

 4. 



'j 



5. 



>> 



6. 



55 



7. 



55 



8. 



