NYMPHONIDAE 59 



Remarks. Although it is extremely small, this specimen is a mature female with 

 developing ova in the femur of each leg. The male is unknown, so that the affinities 

 of the species are uncertain, but it would appear to be allied to A'^. subtile, Loman. 

 It differs from the latter, however, in several respects: (i) the body is more compactly 

 built with a much shorter neck, (2) the legs are much longer relative to the size of the 

 specimen, being 7-6 times as long as the trunk (as against 5-4 and 4-6 in the male and 

 female respectively of A^. subtile — see measurements), (3) the tarsus is longer relative to 

 the propodus and the ventral margin of the latter is armed with five spines, (4) the two 

 terminal palpal segments are shorter, and (5) the legs are characterized by the presence 

 of long bands of a darkish colour. 



This species shows affinities with some of the northern forms, e.g. N. brevitarse, 

 Kroyer (Sars, 1891, pi. v, fig. 3). 



B. GROUP II 



Nymphon australe, Hodgson (Figs. 25 d and zbb). 



N. australe, Hodgson, 1902, p. 257, pi. xl. 



Chaetonymphon altiuculum, Mobius, 1902, p. 181, pi. xxvi, figs. 1-6. 



Ch. australe, Hodgson, 1907, p. 32, pi. x, fig. 14. 



Ch. australe var. austrinorum, Hodgson, 1907, p. 35, pi. iv, fig. 4; pi. x, fig. 15. 



Ch. assimile, Hodgson, 1908, p. 175, pi. i, figs, i, i a. 



N. stylops, Bouvier, 1911, p. 1137; 1913, p. 73, text-figs. 25-31. 



A'^. australe. Caiman, 1915, p. 36. 



Ch. australe var. austrinorum, Loman, 1923, p. 21. 



St. WS 32. 2i.xii. 26. Mouth of Drygalski Fjord, South Georgia, 91-225 m.; gy. M. Small 

 beam trawl: many specimens, including ovigerous and larvigerous i^^. 



St. 42. i.iv. 26. Off mouth of Cumberland Bay, South Georgia, from 6-3 miles N 89° E of 

 Jason Light to 4 miles N 39° E of Jason Light, 120-204 m.; M. Large otter trawl: 20 specimens, 

 some brown, i with Polyzoa. 



St. 45. 6. iv. 26. 2-7 miles S 85° E of Jason Light, South Georgia, 238-270 m.; gy. M. Large 

 otter trawl: hundreds of specimens, many with encrusting Polyzoa. 



St. 123. 15. xii. 26. Off mouth of Cumberland Bay, South Georgia, 230-250 m.; gy. M. Large 

 otter trawl: 5 specimens, well chitinized, bearing Polyzoa; several smaller, very soft specimens. 



St. 140. 23. xii. 26. Stromness Harbour to Larsen Point, South Georgia, 122-136 m.; gn. M. St. 

 Large otter trawl: 12 specimens, several soft. 



St. 144. 5.1.27. Off mouth of Stromness Harbour, South Georgia, 155-178 m.;gn. M. S. Large 

 otter trawl: many specimens, adult and immature. 



St. 159. 21. i. 27. 53° 52' 30" S, 36° 08' W, 160 m.; R. Large dredge: 4 specimens. 



St. 170. 23. ii. 27. Off Cape Bowles, Clarence Island, 342 m.; R. Large dredge: many specimens, 

 all very setose, including ovigerous and larvigerous <J^. 



St. 172. 26. ii. 27. Off Deception Island, South Shetlands, 525 m.;R. Large dredge : 2 specimens 

 with N. bouvieri, n.sp. 



St. 175. 2.iii. 27. Bransfield Strait, South Shetlands, 63° 17' 20" S, 59° 48' 15" W, 200 m.; 

 M. St. G. Large dredge: i specimen. 



8-2 



