404 
DESCRIPTION OF PLATES. 
PLATE. XLI. 
AUSTRALIAN POLYPLACOPHORA. 
Fig. 1 Acanthochiton POPR Sykes, x10, from S. Aust 
» 2 T » X23, type, sedis vale 
» 3 2 T T ier Pie S. Australia, 
valve. 
» 4 » » maughaneanus, “Ashby, x 28, 
ian 
» 9. » mazillaris, br. x28, posterior valve. 
ad 6 22 33 median valve. 
ig n e porcina, Ashby: x 12. 
» 8. ” 3» 33 X06, patena valve. 
» 9. 2 » à , median valve. 
sg Mk » » » » posterior valve. 
Pirate XLII. 
AUSTRALIAN POLYPLACOPHORA. 
Fig. l. Acanthochiton bo die , Ashby, x10. 
» 2. tliffi, deli. xii. 
» 93. » y3 x28, anterior valve. 
» 4. m J E » posterior valve. 
» 9. median valve. 
» 6. Callistochiton antiquus, Hess. x 15, median valve, from 
ew South Wales. 
hp. » 4 meridionalis, Ashby, x15, 
median valve, from S. Austr. 
» 8 ^ " mayi, Ashby, x15, median 
valve, from Tasmania. 
» 9 n 5 » . Ashby,. x15, anterior 
valve, from Tasmania. 
