. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 26 DISCOVERY REPORTS SECOND CALYPTOPIS The average lengths and ranges of length for varying numbers of 2nd Calyptopis are stated in Table IX. The range of forty-eight larvae, the largest number measured in one sample, is between 2-38 and 2-96 mm. and the average is 2-71 mm. The smallest larva measured was 2-13 mm. and the largest 3-33 mm. The carapace is evenly rounded and there are no lateral denticles (Figs. 5 a, b). The abdomen is segmented, and in lateral view the developing uropods can be s
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 26 DISCOVERY REPORTS SECOND CALYPTOPIS The average lengths and ranges of length for varying numbers of 2nd Calyptopis are stated in Table IX. The range of forty-eight larvae, the largest number measured in one sample, is between 2-38 and 2-96 mm. and the average is 2-71 mm. The smallest larva measured was 2-13 mm. and the largest 3-33 mm. The carapace is evenly rounded and there are no lateral denticles (Figs. 5 a, b). The abdomen is segmented, and in lateral view the developing uropods can be seen within the integument. The telson (Fig. 5 c) is furnished with three postero-lateral spines on. Fig. 5. Second Calyptopis. a, dorsal aspect ( x ig); b, lateral aspect ( x 25); c, telson ( X 80); d, antennule ( x 80); e, masticatory lobes of the first maxilla ( x 287). each side of the seven terminal spines. A spine is situated laterally on each side of the telson, as in the ist Calyptopis. Both lateral and postero-lateral spines carry a diminutive dorsal spinule just beyond the middle of their length, as described by Rustad in Euphausia frigida. Posterior to the ist pair of thoracic appendages are situated ventrally and side by side two roughly hemispherical lobes enclosed by the integument containing the buds of the following five pairs of thoracic legs. These lobes are a distinguishing feature of the 2nd Calyptopis of E. superba, and their presence is, of course, associated with the exceptionally early development of the thoracic appendages II-VI in this. 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 Pre
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