Hutton. — On New Zealand Land Mollusca. 187 



New Zealand, as I have identified nearly all the other of Strange's shells ; 

 but Eeeve says that it was collected by Cuming, in which case the locality 

 is pretty siu'e to be incorrect. 



I have adopted Professor von Martens' suggestion, that all the specific 

 names meaning of, or from, New Zealand should be spelt uniformly, and 

 have taken neozelanicus as the most correct. I have also followed him in 

 retaining Eeeve's names for those species which Dr. Pfeiffer named after 

 letters of the Greek alphabet, as these letters are usually employed for 

 varieties, and not used for species. 



I have retained the usual classification, although I think that the 

 Goniognatha do not form a natural section, but that the genera should be 

 distributed among the Aulocognatha. I incline to the opinion that Phrix- 

 gnathus, mihi, is near to Punctum, Morse, although the jaws are different ; 

 and I expect that Carthcea, mihi, is allied to Charopa, Albers, although I 

 do not know the animal. 



I am not aware that the dentition of Endodonta, Charopa, and Amphidoxa 

 have been previously described. With regard to Endodohta, the only 

 species whose radula I have examined, E. pcecilosticta, is not typical, and 

 may be wrongly placed. Charopa ida I take to be typical of that genus ; 

 while Amphidoxa was made to include some species belonging to the 

 Aulocognatha, and others belonging to the Agnatha ; and I have chosen to 

 associate it with the more numerous group belonging to the first section. I 

 have seen no description of the dentition of Thalassia, and refer our species 

 to it provisionally. 



The present hst comprises 116 species, of which 13 are unknown to me. 

 There are also 7 species introduced from England. Of the native species, 

 the dentition of 60 has been described by me either in the present volume, or 

 in vol. xiv. of the Transactions of the N.Z. Institute; and the animals of 26 

 species are described either in this volume or in vol. xv. of the same journal. 



As regards distribution, our knowledge is imperfect ; but, so far as is at 

 present known, about one half the species are confined to the North Island, 

 one quarter to the South Island, and one quarter are common to both. 

 Two of the three species from Stewart Island have been found nowhere 

 else ; and the single species from Campbell Island is also endemic : but the 

 four species said to be found in the Auckland Islands are all natives of New 

 Zealand ; as also appear to be both the species recorded from the Chatham 

 Islands. The Auckland Islands however possess a peculiar variety. 



Outside the New Zealand Islands Vitrina kermadecensis is found in the 

 Kermadec Islands. Therasia ophclia is found in Northern Australia, and 

 Pargphanta milligani is Tasmanian. In neither of the two last cases how- 

 ever have shells from each locality been compared, and the dentition of all 



