. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. No. 109. 183 posterior, one large and strongly impressed, the other smaller, lying above and between the larger one and the hinge-line ; pallial impression 1, 2, 3 : Tellinomya nasuta. 4, 5 : T, dubia. G, 7 : T. cuneata^ In the larger species known, the hinge-line is only slightly arcuate; while among the other species we find many variations in the curvatuic, and it sometimes becomes
. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. No. 109. 183 posterior, one large and strongly impressed, the other smaller, lying above and between the larger one and the hinge-line ; pallial impression 1, 2, 3 : Tellinomya nasuta. 4, 5 : T, dubia. G, 7 : T. cuneata^ In the larger species known, the hinge-line is only slightly arcuate; while among the other species we find many variations in the curvatuic, and it sometimes becomes distinctly angular, as in T. cuneata. In some species the teeth on either side of the beak curve outwards from it, and in others inwards towards the beak on both sides. The teeth are often very minute immediately beneath the beaks. The shells of this genus vary from elliptical to ovate and subtriangular forms, many of them being contracted on the posterior side ; they are usually of moderate thickness, though one species is very thick and stroll^^ Some of the species have a distinctly impressed lunule. The lesser mut^ lar impression is often a small pit placed directly beneath the hinge-1 ip . and between it and the large muscular impression. The beaks are usuai'v of medium size, pointed, rarely ventricose, approximate or in cont-M L never subspiral. * The specimens above figured ^Yere collected at Pauquette's Rapids on the Ot1 ; River, in beds Ij'ing at the junction of the Trenton and Black-river limestones. 1 .;.. 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 New York State Museum. Albany, Regents of the University of the State of New York
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectscience, bookyear1853
