45 
Family, tebebbatellidae 
Genus, Terebratalia 
Terehraialia transversa Sowerby? 
Small, decrepitated fragments that have the structure of this species. 
Occurs with Mytilus edulis and Strongylocentrotus drobachiensis. 
Locality, On main line of Canadian Pacific railway 838 yards west 
of the west end of Harrison River bridge. 
Phylum, MOLLUSCA 
Order, Prionodesmacea 
Family, paballelodontidae 
Genus, Parallelodon Meek 
Parallelodon cardioceraianum sp. nov. 
Plate VIII, figures 1, 2, 3 
Surface marked only by excessively delicate, concentric lines. 
Dimensions. Holotype, a left valve — length, 22 mm.; height, 14; 
semidiameter (diameter of one valve, or distance from lateral convexity 
to median plane), 5. 
Locality. Southwest shore of peninsula, on west side of point that 
bounds the small bay. 
Family, pebnidae 
Genus, Inoceramus Sowerby 
Indeterminable fragments belonging to this genus. 
Locality. West shore of Harrison lake, 600 yards south of Deer creek. 
Family, ptebiidae 
Genus, Mclearnia gen. nov. 
A giant pteriid without sculpture. Right valve flattish with pec- 
tiniform byssal notch. Left valve, somewhat more convex. Ears, sub- 
equal, all well developed. Chondrophore, small, central, and vertical. 
Mclearnia mclearni sp. nov. 
Plate VIII, figure 4; Plate IX, figure 1 
Umbo lies at centre of hinge-line, somewhat posterior to centre of 
disk, giving the shell a peculiar outline. Shell is much thickened in the 
umbonal region. Surface smooth except for occasional growth-lines. 
When split the shell shows traces of fine, radial ribbing. Interior smooth 
except for the single, large, bilobate muscle-scar; and two curved lines of 
*‘diraples", one on each side of the umbo. These appear in the figures, 
as does also the central chondrophore. 
9325ft-4 
