. 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. Zygospira modesta. Zygospira modesta. The internal spires as seen from the The internal spires as seen from the ventral side. dorsal side. At that time the spires of Atrypa were not known to be connected by a loop, as has since been ascertained; and this renders the analogy between the genera still more close. In Zygospira, the apices are more obliquely directed towards the centre of the dorsal
. 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. Zygospira modesta. Zygospira modesta. The internal spires as seen from the The internal spires as seen from the ventral side. dorsal side. At that time the spires of Atrypa were not known to be connected by a loop, as has since been ascertained; and this renders the analogy between the genera still more close. In Zygospira, the apices are more obliquely directed towards the centre of the dorsal valve than in Atrypa; the loop is attached much lower down on the limb of the spire, and is more direct, as is shown in the accompanying figure of Atrypa reticularis,. 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
