. Text-fig. 68. Crystallophyes amygdalina. Lateral and ventral views of posterior nectophore, 'Discovery II' St. 357, 750-500 m., x 13. The posterior nectophore of Crystallophyes, hitherto undescribed, is flattened dorso-ventrally in the apical region, and the five ridges do not meet in a point; the ventrals join the laterals at a short distance below the apex. The laterals form prominent pointed teeth at the base. The lateral radial- canals leave the dorsal and ventral radial-canals at a point about a quarter of its length distal to the apex of the nectosac. Only after suitable staining is th
. Text-fig. 68. Crystallophyes amygdalina. Lateral and ventral views of posterior nectophore, 'Discovery II' St. 357, 750-500 m., x 13. The posterior nectophore of Crystallophyes, hitherto undescribed, is flattened dorso-ventrally in the apical region, and the five ridges do not meet in a point; the ventrals join the laterals at a short distance below the apex. The laterals form prominent pointed teeth at the base. The lateral radial- canals leave the dorsal and ventral radial-canals at a point about a quarter of its length distal to the apex of the nectosac. Only after suitable staining is the nature of the ventral ridges apparent. At about the level of the mid-length of the nectosac, the ventral ridges form pointed flaps, between which and their distal continuations open grooves (Text-fig. 69 B) are found. We do not know at present how the anterior and posterior nectophores are articulated, but it would appear as if at some point there is a grasping of some part of the anterior by the posterior nectophore.
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