38 "TERRA NOVA" EXPEDITION. 



Genus AUSTROPALLENE, Hodgson. 



Hodgson (1915, p. 144) has recently proposed this genus for the reception of 

 those Antarctic species hitherto referred to Pseudopallene or to Corchjlochele, which 

 have a pair of spurs on the cephalon over the bases of the chelophores, and no terminal 

 claw on the ovigers. Neither character is quite satisfactory, for the northern species 

 of Phoxichihts ( = Pseudopallene) have a group of conical tubercles in place of the 

 cephalic spurs, and one of these tubercles may be larger than the others ; while in 

 Austropallene there is usually, perhaps always, a minute terminal spine, if not a " claw," 

 on the oviger. 



Austropallene cornigera (Mobius). 



Pseudopallene cornigera, Mohius, 1902, p. 186, PI. x.xvii, figs. 14-20; Hodgson, 1907, p. 7, 



PL i, fig. 3; Bouvier, 1913, p. 97. 

 Cordyhchele turqueti, Bouvier, 1905, p. 297 ; id., 1907, p. 33, text-figs. 7-18 his. 

 Pseudopallene cmstralis, Hodgson, 1907, p. 10, PL i, fig. 2. 

 Austropallene cornigera, Hodgson, 1911-15, p. 114. 



Occurrence. — Station 194, off Gates Land, 180-200 fathoms ; 1 ?, 1 ^. Station 

 294, Eoss Sea, 158 fathoms; 1 ?. Station 314, McMurdo Sound, 222-241 fathoms; 

 6 ?, 3 ^, 3 immature. Station 338, Entrance to McMurdo Sound, 207 fathoms; 2 ?. 

 Station 355, McMurdo Sound, 300 fathoms ; 1 ?, 1 immature. 



Remarks. — Differences of some importance exist between the specimens recorded 

 under this name, without, however, affording ground for the recognition of more than 

 one species. The relative length of the legs varies considerably, in some cases equalling 

 that of the " Valdivia " specimens, and in others not exceeding the proportions recorded 

 by Hodgson and by Bouvier. The following measurements (in mm.) are taken from 

 specimens chosen as having nearly the same body-length : — 



Station 314. Station 338. 



9 ? 



Length of trunk 5.5 6*5 



Third right leg — 



Total length 25-5 38-0 



Femur 6-5 lO'O 



First tibia • 6-0 9*5 



Second tibia 6-75 10 '5 



Variations in the outline of the proboscis, the direction and length of the cephalic 

 spurs, and the development of spurs on the lateral processes, all tend to confirm the 

 synonymy given above, which combines the suggestions of Hodgson and of Bouvier. 

 In all cases, however, the terminal lips of the proboscis are setose, not merely 

 tuberculated as Bouvier found them. 



