A. D. ROBERTSON, B.A.
THE sources from which the following list is compiled are various. Records of Mollusca collected in the neighbourhood of Toronto are to be found in papers by A. E. Williamson and Prof. Nicholson. The Hon. Justice F. R. Latchford has also kindly supplied me with a list of forms which he has collected. In addition to these lists the collections of Dr. William Brodie in the Biological Museum, University of Toronto, and at the Education Department, as well as those made by Dr. A. G. Huntsman and the writer, were examined. Specimens in Dr. Brodie's collection are indicated by the abbreviation (B) ; those in Judge Latchford's list by (L).
The nomenclature follows as far as possible that of Dall's Land and Fresh-water Mollusks in the Reports of the Harriman Alaska Expedition.
\Talvata tricarinata, Say. Toronto Bay, Grenadier
Pond, Etobicoke Creek.
sincera, Say. Grenadier Pond.
" piscinalis, Muller.? 288