324 Canadian Record of Science. 
The Dog’s Head, Lake Winnipeg, T. C. Weston, 1884: 
one specimen. Snake Island (one specimen) and Berens 
Island (one specimen), Lake Winnipeg, Messrs. Dowling 
and Lambe, 1890. Commissioners Island (one specimen) 
and Reindeer Island (one specimen, loose), Lake Winnipeg, 
D. B. Dowling, 1890. 
MaAciturREA MANITOBENSIS 
Maclurea Manitobensis, Whiteaves. 1890. Trans. Roy. Soc. Canada, 
vol. vit, Sect. 4, p. 75, pls. xii, & xiii, figs. 
1 and 2. 
Maclurea Manitobensis.—Inner side of an operculum, supposed to be that of a 
large specimen of this species, from Jack Fish Island, Lake Winnipeg. Natural 
size. 
