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, i.e. short. 



Dodecasella elegans, Brnrd. (Figs. 168, 169 a). 

 Barnard, 193 1, 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° an d 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 $$ I 4 _I 9 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 segment 2; 5 and 6 subequal to one another and to segments 

 3 P lus 4- 



