P Z.S.1891. Pl.XXTv 



16. 



17. 



18. 



iO. 



19 a. 



19. 



19b. 



21. 



22. 



2+ 



■T-^ 



<i 



27. 



25, 



RMinteni-dfil el. litK. MirLteriiBros', imp, 



NEW SPECIES OF SHELLS FROM THE CHALLENGER EXPEDITION , 



