. The Canadian journal of industry, science and art. THE DEVONIAN FOSSILS OF CANADA WEST. 261 greatly developed that it rises above the hinge-line to a height equal to nearly one-half the length of the whole valve. Sometimes the beak of the ventral valve is incurved down nearly to the dorsal umbo, but in general there is a space of about half a line intervening. Locality and formation.—This species has been found rather com- mon on lot 43, concession 2, township of Middleton, in the Cornifer- ous Limestone. According to Prof. Hall, it occurs " in the limestone of the Upper Heldenberg, (On
. The Canadian journal of industry, science and art. THE DEVONIAN FOSSILS OF CANADA WEST. 261 greatly developed that it rises above the hinge-line to a height equal to nearly one-half the length of the whole valve. Sometimes the beak of the ventral valve is incurved down nearly to the dorsal umbo, but in general there is a space of about half a line intervening. Locality and formation.—This species has been found rather com- mon on lot 43, concession 2, township of Middleton, in the Cornifer- ous Limestone. According to Prof. Hall, it occurs " in the limestone of the Upper Heldenberg, (Onondaga and Corniferous) rarely in Eastern New York, common in Genesee and Erie counties, and in Ohio and Kentucky, in the same geological ; I am indebted to Dr. B. F. Shumand for specimens from the Falls of the Ohio for comparison. These are more convex than any of ours, but of about the same size. Collector.—J. De Cew. Spirifera Parryana.—Hall. Spirifer parryanus.—(Hall.) Geology of Iowa, Vol. I., page 509. Plate 4, fig 8 a, FiR. 77. Fig. 78. Fig. 77. Spirifera parryana.—Dorsal view. Fijc. 78. Side view of the same. Description.—Transversely sub-elliptical or sub-quadrate ; cardinal angles generally rounded ; sides and front angles rounded ; front mar- gin somewhat straight or a little concave for about one-third the width in the middle. Both valves rather strongly convex, giving a sub-globose form to the whole shell; mesial fold and sinus rounded, and extending to the beaks. Area of ventral valve somewhat arcuate, and forming an angle of about 48° to the plane of the lateral margins. Surface with about eighteen flat, rounded ribs, separated by grooves one-fourth the width of the ribs ; mesial fold and sinus not Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Canadian
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