The Voyage of H M S "Challenger" 



Polyplacophora PI II 



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3b 



3.c 



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4. ft. 



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A C Haddon lei 



la- lm, LEPTOCHITON BENTHUS.nsp 

 3a- 3c, LEPTOCHITON KERGUELENSlS.nsp 



2a-2d, LE PTOCHITON B E LKN API , Dall. 



4a -41, HEM1ARTHRUM SETULOSUM, Carpenter 



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