. 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. 96 [Senate nally, most ventricose near the central and umbonial region, depressed and having a broad shallow flat or subangular mesial sinus in front, terminating (in old specimens) in a linguiform extension : dorsal valve elevated and rounded along the middle, declining laterally, having (in old specimens) a strong rounded mesial fold in front; beak incurved. Surface marked by ob- scure traces
. 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. 96 [Senate nally, most ventricose near the central and umbonial region, depressed and having a broad shallow flat or subangular mesial sinus in front, terminating (in old specimens) in a linguiform extension : dorsal valve elevated and rounded along the middle, declining laterally, having (in old specimens) a strong rounded mesial fold in front; beak incurved. Surface marked by ob- scure traces of very fine radiating striae, which are crossed by indistinct concentric lines of growth. This fine large species differs considerably in tlie form and depth of the niesial sinus, as well as in the greater or less extension of the mesial pro- longation of the anterior border of the ventral valve. In some of the spe- cimens the sinus is very shallow and flattened within, while in other in- stances it is more impressed and angular in the middle : other specimens present intermediate grades of difference in this respect, the sinus being nearly flat within, and marked by a narrow, nearly linear, deeper depression. 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
Size: 1206px × 2071px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, booksubjectscience, bookyear1853
