Stomach generally provided with chitinous or calcified masticatory plates. [Please select]
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The omosternum is calcified, widest anteriorly, and has a convex anterior edge. [Please select]
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The calcified xiphisternum is roughly bell-shaped having short lateral processes anteriorly and a deep notch posteriorly. [Please select]
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The basal margin is internally strengthened by a calcified rim, more or less developed. [Please select]
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Other specimens show no trace of these calcified projections. [Please select]
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Grayii_ the valves are so narrow that they form merely a calcified border round the capitulum. [Please select]
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The middle part of the disc is barely calcified, and is transparent. [Please select]
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It appears to me that the laminæ of chitine, and of calcified chitine composing the valves, are both formed not by secretion, but by the metamorphosis of an outer layer of corium into these substances. [Please select]
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The positions of the primordial valves, and the direction of growth in the calcified valves, are, in all the species, the same as in Lepas. [Please select]
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