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Deep-Water Crustacea of the Genus Sergestes (Decapoda, Natantia) from Cook Strait, New Zealand

Length of Antennal Flagellum

Length of Antennal Flagellum

The flagellum is so seldom preserved unbroken that its length is not often recorded. A female specimen of S. arcticus with a carapace length of 14 mm had an undamaged flagellum of 170 mm, the characteristic crescentic bend occurred after 54 mm and every segment of the remaining 116 mm was armed with the pair of curved setae so often described in this genus. This example can be compared to Stebbing's (1905) statement that his S. gloriosus (S. prehensilis Bate), with a carapace length of 15 mm, had an antennal flagellum 163 mm in length.

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