614 LAND AND FRESH-WATER MOLLUSCA OF NEW ZEALAND, 



which has since remained the standard summary of this fauna. 

 A catalogue based on Hutton's appearedin the Malakozoologische 

 Blatter (2), x. pp. 175-183. Dr. Kobelt incidentally enumerated 

 the members of this fauna as known to him in 1880 in the Jahr- 

 btich'er der Deutschen Malakozoologischen Gesellschaft, Vol. vii. 

 pp. 26-28. Anotlier brief list occurs on pp. 256-257 of Fischer's 

 Manuel de Conchyliologie. 



Great gains to our knowledge of the distribution, anatomy, 

 habits and affinities of the snails of New Zealand have been 

 effected by industrious- students and collectors during the past 

 decade. It is here proposed to digest and collate these additions 

 with the sum of previous records, and it is hoped that the inclusion 

 of every noteworthy reference and the revised arrangement of the 

 species may facilitate the study of the subject. 



The first reference quoted is always that of the original descrip- 

 tion. Where the reference paragraph does not terminate in "ikc," 

 the quotations are considered to be exhaustive. More usually 

 space has been saved by leaving out the least useful references, 

 such as are mere reprints or translations of earlier definitions. 

 Thus Gray's paper in the P.Z.S. 1849 was copied into the Ann. 

 Mag. N.H. (2), vii. ; Gould's descriptions in the Proceedings of 

 the Natural History Society of Boston were simply reprinted in 

 his "Expedition Shells" and " Otia Conchologica " ; and Pfeifler's 

 descriptions in the P.Z.S. and the Mai. Bliit. are merely trans- 

 ferred to the respective volumes of the Monographia Heliceorum 

 and Pneumonopomorum Viventium. In these minor details the 

 present list may be sup{)lemented by consulting von Martens' 

 Catalogue and Hutton's Manual. Where the original locality is 

 known with any exactness, the collector's name follows in brackets. 

 The dates following the species are those of publication, not, as 

 far as we can ascertain, those on which papers were read nor those 

 of the year for which the periodicals contain the annual work. 

 We expect that Pfeiffer's and Gray's papers in the P.Z.S. during 

 the late forties and early fifties were not published until the year 

 following that quoted for each. As, however, it is impossible for 



