264 DISCOVERY REPORTS 



Although the material is not very large, it serves to indicate that this species ascends 

 to the upper layers during the night. On only two occasions (nos. i and 19) has it been 

 found during the day at a depth less than 100 m. ; but it occurs frequently in this upper 

 zone between the hours of (approx.) 8 p.m. and 6 a.m. The negative evidence, though 

 derived from only three stations, confirms this: at St. 71 six other hauls between 

 1000-0 m. and at St. 120 one other haul at 340-360 (-0) m. were made, but no specimens 

 obtained; at St. 151, 15 hauls were made between 1275-0 m., and specimens were only 

 taken at 500-625 m. 



The carpal process of gnathopod 2 does not always reach quite to the end of the 

 metacarpus, but is often not more than two-thirds the length of the latter. The eyes 

 according to Behning are poorly developed, the individual ocelli discernible only with 

 difficulty or not at all. In all the present specimens, as in those of the Terra Nova 

 collection, the eyes are quite well developed and the ocelli easily discernible ; they only 

 differ from those of most other species in being of a paler reddish-brown instead of a 

 dark brown or blackish colour. 



As already stated I think it very probable that the true name for these specimens 

 should be edwardsii, Bate (1861, Ann. Mag. Nat. Hist. (3), vm, redescribed as a n.sp. 

 in 1862, p. 300, pi. xlix, figs. 6, 7), the original locality of which was the Powell Islands 

 (South Orkneys). There is, however, no specimen actually comparable as regards the 

 length of peraeopods 3 and 4 with Bate's figure, or even with longipes. A re-examination 

 of Bate's type, if still extant, especially the details of the serrations of the uropods, might 

 be interesting in comparison with the specimens referred to antarctica by Behning. 



Distribution. This typical Antarctic and sub-Antarctic species extends northwards 

 up the west coasts of Africa and South America in the cold Benguella and Chilean 

 currents. The Scotia record is the only previous record anywhere in the neighbourhood 

 of the present localities, the most northerly of which is St. 71 (43 ° S, 46 W). 



Vibilia australis, Stebb. 



Stebbing, 1888, p. 1287, pi. cxlix. 



Behning, 1913, p. 219; 1925, p. 488, figs. 32-34; and var. pelagica, p. 488, figs. 35-41; 1927, 



p. 119. 

 Spandl., 1924, p. 21. 



Occurrence: St. 67. South-west Atlantic. 6 $? 4 mm., 1 ovig. $ 5 mm. 



Distribution. Atlantic, o°-2-F N; Red Sea; Indian Ocean, 6° N, 73 E; South of 



Australia, 48 18' S, 130 4' E. 



Vibilia armata, Bov. 



Behning, 1913, p. 220; 1925, p. 491, figs. 52-61 (synonymy); 1927, p. 119. 

 Stephensen, 1918, p. 46, figs. 15, 16, chart 6. 

 Barnard, 1930, p. 404. 

 Occurrence: 1. St. 4. Tristan da Cunha. 1 $ 8 mm., 7 juv. 3-6 mm., from stomach of Blue Fish, 

 " Perca antarctica". 



2. St. 71. South-west Atlantic. 1 <J 8 mm. 



3. St. 78. South Atlantic. 6 <$£ 7-8 mm., 28 $$ 7-8 mm., 3 juv. 5-6 mm. 



