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* — -Notes on African Mollusca«. (Ann. & Mag. Nat. Hist., 6. ser, vol. VIII., 1891, pp. 317—324.) 



* — »Descriptions of a new Species of Slug from South Africa-. (Ann. & Mag. Nat. Hist., 6. ser., vol. X., 1892, p. 465—466.) 



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Siiter H.: »Preliminary Notes on the Relation between the Helicidae of New Zealand, Tasmania, and South .\frica«. (Ann. & Mag. 

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Denkschriften der mathem.-naturw. Cl. LXVII, Bd. 80 



