78 THE NAUTILUS. 



Section Thalasso helix, hitherto not recorded from beyond New 

 Zealand. There is no douht that H. fordei Brazier, (^=petterdi Cox 

 =^2)osltara Cox) must be classed under this section, and very likely 

 also H. austrmus Cox, H. allporti Cox, H. Jielice Cox, H. medianus 

 Cox, H. mixta Cox, H. tabescens Cox, H. tranquilla Cox, U. trajec- 

 tura Cox, which are said to be varieties of H. fordei. This species 

 is found also in A.ustralia. 



Genus Laoma. 



Section Phrixgnathus, a genus which was thought to be peculiar 

 to New Zealand " par excellence. " Now I am quite sure that the 

 following Tasmanian mollusks belong to this section : 



H. coes'us Cox (and var. occultus Cox ?) H. henryana Petterd, and 

 H. pictilis Tate ; the latter being found also in Australia. 



Genus Rhenea.^ 



This genus of which two species are known from New Zealand, is 

 in Tasmania represented by Hyalina nelsoneiisis Brazier {=fidge- 

 trum Cox, and very likely H. dyeri Petterd, though the dentition 

 of the latter is unknown to me). 



I am confident that on examining my slides there will be some 

 other sections of Gerontia to be placed on record in my next com- 

 munication on Tasmanian snails. 



In future we may no doubt be able to distinguish in New Zealand 

 and Tasmania two different immigrations of land moUusca, one 

 having spread from north southward, and another, the antarctic, 

 migrating from south to north. 



Springfield Eoad, Christ Church, New Zealand, Sept. 6, 1893. 



SOME (RESPONSIVE) REMARKS RELATIVE TO CYPR.5:A GREEGORI 



FORD. 



BY JOHN FORD. 



In the note on Cypra^a Greegori Ford, published in the October 

 number of the Nautilus, the writer, Mr. Edgar A. Smith, of Lon- 

 don, rather forcibly remarks that " the new French School of Con- 

 chologists would probably agree with Mr. Ford in considering the 

 shell in question specifically distinct from C. cruenta, " but, " he 



lA genus of carnivorous, javvless snails allied to Rhytida and Paryphanta, for- 

 merly called Elaa Hutt. (preoc.) — Ed. 



