LYSIANASSIDAE 43 



Genus Waldeckia, Chevr. 



Chevreux, 1906, p. 13. 



Waldeckia obesa (Chevr.). 



Chevreux, 1906, p. 15, figs. 8-10 and 191 1, p. 403. 

 Chilton, 1912, p. 471. (zschauii, non Anonyx zschauii, Pfr.) 

 Barnard, 1930, p. 323, fig. ici (references). 



Occurrence: 1. St. 170. South Shetlands. 1 $ 25 mm., 2 juv. 11 mm. 



2. St. 172 



3. St. 184 



4. St. 189 

 5- St. 195 



South Shetlands. 1 o 20 mm., 1 ovig. $ 25 mm. 



Palmer Archipelago. 1 $ 18 mm., 1 $ 25 mm. 



Palmer Archipelago. 2 SS 18 and 22 mm., 6 $$ 21-22 mm. (2 ovig.). 



South Shetlands. 1 J 1 18 mm., 1 $ 15 mm. 



Remarks. The postero-inferior angle of pleon segment 2 is quadrate with a small 

 upturned point, as Schellenberg remarks ; and the antero-inferior angle of pleon segment 

 1 is also quadrate. 



The bathymetrical range is rather noteworthy, being from 36 m. (no. 3) to 425 m. 

 (no. 2). 



Distribution. Coats Land; Palmer Archipelago and Graham Land; McMurdo 

 Sound; 'Gauss' winter station; South Sandwich Group. 



Genus Aristias, Boeck. 

 Stebbing, 1906, pp. 49, 718. 



As regards the Antarctic species, Walker described neither the epistome nor the 

 upper lip, and Schellenberg only described the former. A certain amount of doubt 

 therefore arises as to the identity of the specimens listed below. 



Aristias antarcticus, Wlkr. (Fig. 8 a, b). 



Walker, 1907, p. 11, pi. iii, fig. 5. 



Barnard, 1930, p. 324. 



Non Schellenberg, 1926, p. 255, fig. 10 {antarcticus non Wlkr. = ? sp.nov.). 



Occurrence: 1. St. 42. South Georgia. 1 $ 12 mm. 



2. St. 45. South Georgia. 1 ovig. $ 12 mm. 



3. St. 149. South Georgia. 3 ?? 8, 9 and 11 mm. 



4. St. 170. South Shetlands. 1^7 mm., 1 $ 8-5 mm. 



5. St. MS 71. South Georgia. 2 <$S 9 mm., 6 ?$ 10-12 mm. 



Remarks. These specimens are referred to Walker's species solely on their agreement 

 with his figure of the dorsal profile of pleon segment 4. Future research must show 

 whether they agree with his type specimen as regards the epistome and upper lip. The 

 upper angle of the upper lip is always quadrate, but varies a little in the extent to which 

 it protrudes beyond the epistome. The telson has the lobes more tapering than in 

 Walker's figure, but not angularly bevelled off as figured by Schellenberg. Peraeopods 

 1-5 have the 5th joint markedly wider than the 6th, as in Walker's figure. Uropod 3 in 

 the ovigerous ? has both rami broadly ovate, much broader than in Walker's figure or 



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