BV C. HEDLEY AND H. SUTER. 615 



US to ascertain this, we have not felt justified in departing from 

 the usages of our predecessors. Only in the case of evident and 

 accidental mis-spelling, as antipodanum for antipodarum, or 

 tennissoni for tenisoni, have we amended the etymology of the 

 original describers. Different authors have rung numerous 

 changes upon the Latin adjective for New Zealand, thus Charopa 

 (Tesseraria) novoseelandica, Pfr., has been spoken of by Hutton 

 as Pupa neozelanica, by Kiister as Pu2)a novozeelandica, and by 

 Sowerby as Pupa novazelandica. Dr. von Martens has suggested 

 that these and other variations be reduced to one common form ; 

 he does not himself act on the idea, and we likewise have chosen 

 the straight and narrow road of exact quotation. The genera and 

 subgenera to which authors have referred the .same species are 

 very various, thus Flanitmdina crebriflammis, Pfr., has been 

 recorded by PfeifFer as Helix crebriflammis, by Gray as Nanina 

 crebrijiammis, by Tryon as Elcea crehrijlammis, by Adams as 

 Amphidoxa crehrijlammis, and by Hutton as Paryphanta crehri- 

 fiammis ; we have not burdened our pages with the reiteration 

 of these generic titles, but have given separately what specific 

 names have fallen into synonymy. 



We have confined ourselves to the political limits of the 

 province, including the Kermadec, and omitting Lord Howe and 

 Norfolk Islands. 



As the New Zealand fauna becomes better known, its insularity 

 stands out more prominently. One by one have been eliminated from 

 our list the foreign genera Testacella, Daudebardia, Diplomphalus, 

 Vitrina, Nanina, Patula, Hyaliyia, Zonites, Succinea, Pupa, Helix, 

 Bulimus, Rhabdotus, Limax,Arion,Leptopoma, Cydopliorus, Physa, 

 and JVeritina, falsely imposed on our fauna by the negligence of 

 collectors or the mistakes of authors. Although the islands have 

 now been well searched, genera which might have been expected 

 to occur, since prevalent in neighbouring countries, as Nanina, 

 Partida, Succinea, Stenogyra, Pupa, Vagimda, Truncatella, 

 Helicina, and Navicella, have not yet been detected, while 

 42 



