


















From the ‘ProcrEpines oF THE Maxaconocican Nocrery,’? Vol. II, 
| Part 6, November, 1897. ] 
A REVISION OF THE NEW ZEALAND ATHORACOPHORIDA. 
By Henry Surer. ’ 
Read 9th April, 1897. 
urine the last few years I have tried to get specimens of our native 
igs from as many localities as possible, and the material thus brought 
gether, comprising all the species known, enables me to attempt this 
vision. Since publishing the ‘‘ Reference List of the Land and 
resh-water Mollusca of New Zealand,’”! in 1893, Mr. W. E. 
llinge has described Janella maculata? from specimens I sent him, 
lected in the Forty Mile Bush, North Island. As will be shown 
iter on, I do not consider Mr. Collinge’s species new; however, its 
eation has demonstrated that we have more distinct species than 
was willing to admit in the ‘ Reference List.” 
Then Cockerell’s Neojanella dubia*® required investigation, as well as 
amroth’s Athoracophorus marmoratus. ‘The former I considered to be 
ynonymous with A. ditentaculatus, Quoy & Gaim., the latter with 
|. marmoreus, Hutton, but in both cases | was wrong. Specimens are 
ow in my possession, and on examining and dissecting them I con- 
mced myself that my former conclusions were erroneous. 
A new species, 4. Simrothi, which exteriorly is very distinct from 
1 the other species, has been described in these Proceedings (ante, 
, 84), and with another interesting new species brings up the number 
[ known species to eight, three only having been admitted in the 
Reference List.” 
‘Mr. Collinge was no doubt quite right when, in concluding his 
aper (t.c., p. 580), he expressed the opinion that the whole family 
mellidee required revision, and that a series of coloured drawings 
Ken from living specimens should be provided. Unfortunately my 
eans are too limited to undertake the latter task; while with regard 
) the present revision of the New Zealand Athoracophoride I am 
lly aware that it is very far from being exhaustive, leaving many 
lestions concerning the members of this very interesting family 
touched, especially their more detailed anatomy. 
Lhe very peculiar and interesting structure of the eyes, as demon- 
ated by Dr. Simroth in A. marmoratus,t on which he based his 
1 Proc. Linn. Soc. New South Wales, ser. 11, vol. vii, pp. 613-665. 
* Proc. Zool. Soc., 1894, p. 527. 
® Proc. Zool. Soc., 1891, p. 217. 
* Nova Acta Acad. Crs. Leop. Carol., Bd. liv, p. 76, pl. iv, figs. 19, 20. 
