The Voyage of KM. S " Challenger. 



Gasteropoda PI. L 



fl 7/f i|. l u 'j .i' ft ' 



^,i^ g -,<.V., ' .J r ^p.~ -+r\- 



4-4- 



Geo"West X Sons. oLeL lith. et imp 



CYLICHNA, DOLABR I FER A , CfeCUM 



