. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 3°4 DISCOVERY REPORTS Genus Dodecasella, Brnrd. Barnard, 1931, p. 430. Mandibular palp 3-jointed, 3rd joint with one long spine at beginning and one at end of a row of short spinules. Flagellum of antenna 2, 6-jointedin J, 5-jointed in?, without long setae. Gnathopod 2 inserted anteriorly. Peraeopod 1 (3) about two-thirds to three-quarters length of segment, slender, but with normal number of joints. Peraeopod 2 (4) absent. Peraeopod 3 (5) reduced to four joints. Peraeopods 4 and 5 (6 and 7) lon
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 3°4 DISCOVERY REPORTS Genus Dodecasella, Brnrd. Barnard, 1931, p. 430. Mandibular palp 3-jointed, 3rd joint with one long spine at beginning and one at end of a row of short spinules. Flagellum of antenna 2, 6-jointedin J, 5-jointed in?, without long setae. Gnathopod 2 inserted anteriorly. Peraeopod 1 (3) about two-thirds to three-quarters length of segment, slender, but with normal number of joints. Peraeopod 2 (4) absent. Peraeopod 3 (5) reduced to four joints. Peraeopods 4 and 5 (6 and 7) long, slender, 6th joint slender, dactyl long, curved. Branchiae on segments 3 and 4, cylindrical, on segment 3 short, on segment 4 very elongate, especially in <$. Pleon as in Dodecas, with two pairs of slender, 2-jointed appendages. Remarks. Very close to Dodecas, Stebb., differing only in the absence of branchiae on segment 2 and the very long branchiae on segment 4; and in having the 2nd gnatho- pod inserted anteriorly, with the 5th joint normal, short. Dodecasella elegans, Brnrd. (Figs. 168, 169 a). Barnard, 1931, p. 430. Occurrence: 1. St. 42. South Georgia. 2 S<S 24 and 38 mm. 2. St. 45. South Georgia. 2 $$ 24 and 33 mm., 1 juv. 14 mm. 3. St. 123. South Georgia. 2 SS 3° and 42 mm., 1 incomplete $, 1 $ with 1 ovum in pouch 22 mm. Types. 4. St. 140. South Georgia. 13 <J<J 16-30 mm., 2 $$ 14 and 16 mm., 1 immat. $ 11 mm. 5. St. 144. South Georgia. 22 <$<$ 14-36 mm., 15 $$ I4_I9 mm- (some ovig.).. Fig. 168. Dodecasella elegans, Brnrd. General view. Description. Body very elongate and slender, smooth in both sexes, and slightly enlarged at the junctions of segments and insertions of limbs and branchiae. Forehead rounded. Eyes circular but pale and indistinct. In cJ segment 2 a little longer than head plus segment 1, segments 3, 4 and 6 each equal to head plus segments 1 and 2; segment 5 a little longer than 4; in $ segments 3 and 4 each subequal to segme
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