. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. faint mesial depression in pedicle valve; slight frontal sinuosity; fine radiating striae near the front. Found in the upper Clinton limestone at Lockport (Hall). Probably also at Niagara. Whitfieldella sulcata (Vanuxem) (Fig. 128) (Grabau. Geol. soc. Am. Bui. 11:367, pi. 22) Distinguishing characters. Ventricose, elongate; well marked sinus in both valves; lines of growth and prominent wrinkles and changes in direction of growth. Found in the Manlius limestone of North Buffalo, etc. Whitfieldella rotundata (Whitf
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. faint mesial depression in pedicle valve; slight frontal sinuosity; fine radiating striae near the front. Found in the upper Clinton limestone at Lockport (Hall). Probably also at Niagara. Whitfieldella sulcata (Vanuxem) (Fig. 128) (Grabau. Geol. soc. Am. Bui. 11:367, pi. 22) Distinguishing characters. Ventricose, elongate; well marked sinus in both valves; lines of growth and prominent wrinkles and changes in direction of growth. Found in the Manlius limestone of North Buffalo, etc. Whitfieldella rotundata (Whitfield) (Fig. 129) (Grabau. Geol. soc. Am. Bui. 11:368, pi. 22) Distinguishing characters. Small, subcir- cular; moderately convex; beak curved at Fig. 129wmtneideiiarotundata right angles to plane of contact of valves. Found in the Manlius limestone of Erie county (N. Y.) Whitfieldella laevis (Whitfield) (Fig. 130) (Grabau. Geol. soc. Am. Bui. 11:369, pi. 22) Distinguishing characters. Small; broad- ly ovoid; moderately gibbous, greatest gibbosity in posterior third; faint mesial depression. Found in the Manlius limestone of Erie Pig. 130 Whitfieldella laevis x \\& counf v ("M V ") Genus hyattella Hall & Clarke [Ety.: proper name] (1893. Pal. N. Y. v. 8, pt 2, p. 61) Shell similar to Whitfieldella, but compactly subpenta- hedral, and without the median septum in the brachial valve. Hyattella congesta (Conrad) (Fig. 131 and 131a). Atrypa congesta Hall (1852. Pal. N. Y. 2:67, pi. 2^); Atrypa quadricostata Hall (Pal. N. Y. 2:68, pi. 23). 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 Buffalo Society of Natural Sciences. Buffalo, N. Y. : Buffalo Society of Natural Sciences
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