78 THE NAUTILUS. 
Section Thalassohelix, hitherto not recorded from beyond New 
Zealand. There is no doubt that H. fordei Brazier, (—petterdi Cox 
—=positura Cox) must be classed under this section, and very likely 
also H. austrinus Cox, H. allporti Cox, H. helice Cox, H. medianus 
Cox, H. mixta Cox, H. tabescens Cox, H. tranquilla Cox, H. trajec- 
tura Cox, which are said to be varieties of H. fordei. This species 
is found alsoin Australia. 
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. cesus Cox (and var. occultus Cox?) Hl. 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 nelsonensis Brazier (—fulge- 
trum Cox, and very likely H. dyeri Petterd, though the dentition 
of the latter is unknown to me). 
Iam 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 mollusca, one 
having spread from north southward, and another, the antarctic, 
migrating from south to north. 
Springfield Road, Christ Church, New Zealand, Sept. 6, 1893. 
SOME (RESPONSIVE) REMARKS RELATIVE TO CYPRHA GREEGORI 
FORD. 
BY JOHN FORD. 
In the note on Oyprea Greegori Ford, published in the October 
number of the Naurrius, 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 consi the 
shell in question specifically. distinct from C. eruenta,” but, “he 
1A genus of carnivorous, jawless snails allied to Rhytida and Par -yphanta, for- 
merly called Z/ea Hutt. (preoc.)—//d. 
