. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. O'lmm Fig. 2. C. teretivalvata a, male from left side; b, anterior (left) unsymmetric gland of male from inside the shell; c, posterior (right) unsymmetric gland and medial gland of male from inside the shell; d, frontal organ of male; e, frontal organ of female;/, female from left side. (Figs, b, c, d from holotype; a, e and/ from paratypes.) The species may be distinguished from other species of the genus, except C. rotundata Miiller, by the form of the shell coupled with the position of
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. O'lmm Fig. 2. C. teretivalvata a, male from left side; b, anterior (left) unsymmetric gland of male from inside the shell; c, posterior (right) unsymmetric gland and medial gland of male from inside the shell; d, frontal organ of male; e, frontal organ of female;/, female from left side. (Figs, b, c, d from holotype; a, e and/ from paratypes.) The species may be distinguished from other species of the genus, except C. rotundata Miiller, by the form of the shell coupled with the position of the unsymmetric glands. As far as is known, it differs from C. rotundata morphologically in its size, and in the form of the male frontal organ, as well as in its 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 Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colonial Office. Discovery Committee. London ; New York : Cambridge University Press
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