. Fig. 2. The maxilliped, etc., of species of Serolis. a, maxilliped of S. exigua, Nordenstam : x 87. 6, maxilliped of S. schythei, Liitken, S- x 20. c, maxilliped of S. schythei, Liitken, $: x 25. d, maxilliped of S. glacialis, Tattersall, 65. e, maxilliped of , Tattersall, $: x 65. /, ventral view of left second thoracic appendage and its associated brood lamella in a breeding $ of S. discoverii, : x 35. more difficult to explain, and Dr Caiman, who has very kindly examined the prepara- tions of the maxillae of these two species, is inclined to believe that the condition seen
. Fig. 2. The maxilliped, etc., of species of Serolis. a, maxilliped of S. exigua, Nordenstam : x 87. 6, maxilliped of S. schythei, Liitken, S- x 20. c, maxilliped of S. schythei, Liitken, $: x 25. d, maxilliped of S. glacialis, Tattersall, 65. e, maxilliped of , Tattersall, $: x 65. /, ventral view of left second thoracic appendage and its associated brood lamella in a breeding $ of S. discoverii, : x 35. more difficult to explain, and Dr Caiman, who has very kindly examined the prepara- tions of the maxillae of these two species, is inclined to believe that the condition seen is a secondary rather than a primitive one. The sympod of the maxilliped consists of a short coxa (C) and a large basis {B) pro- duced distally into a large endite {B'); the endopod or palp consists of three, sometimes four, more or less lamellar segments. According to Hansen's description of the Isopod type of maxilliped, there is no exo- pod; but a plate-shaped epipod {E) is present, the proximal part {E) of which is marked off by a transverse suture from the distal major portion (£"); such a condition is figured by him for Glyptonotus sibiriciis.
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
