. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. EUPHAUSIA CRYSTALLOROPHIAS 221 There is no dorsal lobe at the distal end of the first segment of the antennular peduncle as in the other species described; there is a short sharp spine, difficult to distinguish among the setae, on the outer distal corner (Fig. 17 a, b). The dorsal keel of the third segment is well developed and of the same shape as that in E. frigida but per- haps a little lower. The abdominal segments have no dorsal spines. The male copulatory organ shows many diff'erences from
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. EUPHAUSIA CRYSTALLOROPHIAS 221 There is no dorsal lobe at the distal end of the first segment of the antennular peduncle as in the other species described; there is a short sharp spine, difficult to distinguish among the setae, on the outer distal corner (Fig. 17 a, b). The dorsal keel of the third segment is well developed and of the same shape as that in E. frigida but per- haps a little lower. The abdominal segments have no dorsal spines. The male copulatory organ shows many diff'erences from those of the four species already described, but it is on the same pattern (Fig. 30 e). In E. liicens, E. vallentmi and E. frigida the terminal process has a wide and somewhat foot-like base, the toe forming. 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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