Giti1ms.—On New Zealand Mollusca. 169 
Genus Unio. 
Unto warkarense. Shell, oblong, or oblong-ovate, concentrically and 
irregularly sulcated, sub-diaphanous, inflated; anterior side produced, 
obtuse, slightly compressed ; posterior slope, keeled, sharp: base, slightly 
depressed ; umbones, decorticated, flattish, much worn ; primary tooth, large 
crested ; epidermis, strong, overlapping at margin, wrinkled on anterior 
slope ; colour, brownish-yellow on posterior side, shading into dusky-green 
on the anterior, with alternate light-coloured lateral stripes ; 84 inches 
broad, 23 inches long. 
ab. Waikare Lake, mountains, interior of the North Island of New 
Zealand, 
The largest and handsomest of all the known New Zealand species of 
the genus, 
= 
Art XXIII.—Notes on New Zealand Mollusca. 
By Mr. Justice Gmures, Auckland. 
(Read before the Auckland Institute, 11th July, 1881.] 
Dunia my recent trip to England I took with me the late Dr. Sinclair’s 
collection of New Zealand shells, mostly collected in the North Island, and 
d them named according to the specimens in the British Museum by the 
aid of Mr, G. B, Sowerby, junr., and Mr. E. A. Smith, of the British Museum, 
to both of whom my best thanks are due for their kindness. On my return to 
the colony I have compared these with Professor Hutton’s type specimens, 
in the Colonial Museum, Wellington, and in the Dunedin Museum. The 
following is the result of my researches, which may probably prove useful 
to those interested in New Zealand conchology. The pages given refer to 
the new edition of the “Catalogue of New Zealand Mollusca,” by Professor 
Hutton; Wellington, 1880, 
PAGE 
16. Helix reinga—Doubtful if ever found in New Zealand. 
41. Conus aplustre—Add to catalogue. I have a single specimen 
from the Bay of Islands, but it is doubtful whether either this 
or Conus zealandicus really belong to New Zealand. They 
may have been dropped from some South Sea whaler, of 
which many visit the Bay of Islands. 
42. Acus hirki is Terebra tristis of Deshayes and 7. antarctica of 
Smith. 
a 
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