A collection of Antarctic limpets. Patinigera polaris, bore numerous Paralaeospira levinseni Caullcry and Mesnil and a few of a new species which, though dextrally coiling, must be placed in Protolaeospira (Marsipospira Bailey). This genus, like Helicosiphon and Romanchella sensu stricto, has a characteristic stalk for the attachment of embryos.