SPUMELLARIA ET NASSELLARIA. TAF. 19. 



Tlie\oyage of H.M.S ' ChaüengSer 



Radiokria 1 J ] .'»II 



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1-5. CROMYOMMA, li 7 CRO MYO DRYM US 8.9 CRO MYOS PHAERA 



Lifcogr. 



