MEETINGS OF SOCIETIES. 175 
2. **A decade of new species of Feroniide,” by Capt. T. Broun. 
In this paper Captain Broun gave descriptions of ten new species 
of ground beetles, discovered by Messrs. T. Chalmer and S. W. 
Fulton, in Otago. 
— 
PHrIcOsOrHicakl INSTITUIE OF CANTERBURY. 
Christchurch, 5th June, 1884.—R. W. Fereday, Esq., President, 
in the chair. 
The President regretted to announce that Mr. M. W. Maskell 
had resigned his position as Hon. Treasurer of the Institute, on 
account of his approaching departure for Wellington. A vote of 
thanks to him, proposed by Mr. H. R. Webb and seconded by 
Mr. E. Robson, was carried by acclammation, and fittingly acknow- 
ledged by Mr. Maskell. 
Papers—1. “The Diamond Mines of South Africa,” by Pro- 
fessor F. W. Hutton (see p. 151). 
In the discussion which followed, Professor Hutton, in answer 
to Mr. E. Ford, said that no geologist could say with certainty 
that diamonds would not,be found in a particular country, but he 
did not think they would ever be found at Alford Forest or Mount 
Somers, as the igneous rocks there had not been subjected to any 
change. They were more likely to be tound in country where 
there were slate rocks with dykes, and where the volcanic rocks 
had been denuded from the surface. 
2. ‘* The fresh water shells of New Zealand belonging to the 
family Limnezidz,” by Professor F. W. Hutton. The following 
new species are described :— 
Limnea (Amphipeplea) arguta.—Shell globosely ovate; aperture 
occupying three quarters of the entire length of the shell; inner 
lip reflexed over the umbilicus. Length o3 inch. Had. Christ- 
church. 
Limnea ampulla Shell ovate; aperture rather more than half 
the entire length ; inner lip not covering the umbilicus. Length 
0.4 inch. Had. Arthur’s Pass. 
Limnea leptosoma.—Shell ovate, acuminate above; aperture 
two-thirds the entire length ; inner lip callously reflexed over the 
umbilicus. Length 0.47 inch. Hab. Wellington. 
Limnea tenella—Shell small, oblong; aperture less than half 
the entire length ; inner lip not covering the umbilicus. Length 
0.18 inch. Hab. Christchurch. 
Limnea pucillaa—Shell small, oblong; aperture half the entire 
length ; inner lip covering the umbilicus. Lengtho16inch. Hab' 
Auckland. : 
The other species admitted are Limnea tomentosa (Pfeiffer), Buli- 
nus antipodeus (Sowb.), B. variab'lis (Gray), B. tabulatus (Gould), B. 
mesta (Adams), and Planorbis covinna (Gray). The dentition of L. 
ampulla, L. tonentosa, L. arguta, and B. mesta are also figured. 
OTAGOAINSTILU LE. 
Dunedin, roth June, 1884.—A. Montgomery, Esq., Vice-Presi- 
dent, in the chair. 
New members—Mr. R. N. Twopeny and Miss Dalrymple. 
Papers—1. ‘On Moa remains trom the Mackenzie Country 
and elsewhere,” by Mr. F. R. Chapman. 
