a4 a DISCOVERY REPORTS 



Occurrence', i. St. [64. South Orkneys. 8 S3 S~TS mm -> 7 ?? (some ovig.) 5-5-7 mm., S juv. 

 4 5 mm. 

 2. Hast Cumberland Hay, South Georgia. Several <$<$ and ?$ (inch ovig. YY but no 

 adult o*<J) up to 8 mm. 



REMARKS. Epistome as figured here for ingens. Antero-inferior angle of 2nd joint of 

 peraeopods 1 and 2 rounded or bevelled. Hind margin of 2nd joints of peraeopods 3-5 

 convex. 



Colour (as preserved): the pigment is more or less evenly distributed in distinctly 

 separated specks, and seems better developed, or more lasting in the preservative, in 

 the? than in the J. 



Distribution. Almost cosmopolitan. 



Jassa ingens (Pfr.) (Fig. 151 c). 



Pfeffer, 1888, p. 131, pi. iii, fig. I. 



Walker, 1903, p. 61, pi. xi, figs. 98-107 {goniamera)', 1907, p. 38 



Chevreux, 1900, p. 94, figs. 54-56 (wandelt); 1913, p. 181, fig. 61. 



? Chilton, 191 2, p. 511. 



? Schellenberg, 1926, p. 383 (part). 



Occurrence: 1. St. 170. South Shetlands. 3 <$3 15-17 mm., 10 ?? 17-19 mm. 



2. St. 175. South Shetlands. 1 S 18 mm. 



3. St. 179. Palmer Archipelago. 3 cTo* 10-11 mm.,40vig. $$9-10 mm., 1 juv. 5 mm. 



Remarks. Epistome forming proximally a projecting 

 lamina, rounded in profile, and separated from the front 

 part of the head by a narrow indent. Antero-inferior 

 angle of the 2nd joint in peraeopods 1 and 2 sharply 

 quadrate. Hind margin of 2nd joints of peraeopods 3-5 

 straight or almost so, the lower hind angle sharply 

 quadrate. 



Colour: pigment forming definitely localized patches, 

 the component chromatophorcs not distinctly separated. 



Distribution. South Georgia; Cape Adare and 

 McMurdo Sound; Palmer Archipelago. Fig. 151. Jassa pusilla (Sars). 



a. Gnathopod 2 J. b. Profile of 



t -ii /o \ /vi . ;\ epistome and upper lip. Jassa ingens 



Jassa pusilla (Sars) (Pig. 151 a, b). J\ n f, c • 



J c v / \ o J » / (Pfr.). c. Profile of epistome and 



Sars. 1895, p. 596, pi. ccxiii, fig. 1. upper lip- 



Stebbing, 1906, p. 655. 



Sexton, 191 1, p. 214, p. xiii, fig. 11. 



Occurrence: St. 4. Tristan da Cunha. 5 <$<$ 4-5 mm., 2 ovig. ?$ 375 mm. 



Remarks. Epistome with a triangular sharply pointed projection. Antero-inferior 

 angle of side-plate 1 rounded-quadrate, not acute. Lower margin of side-plate 2 

 forming an even curve with those of side-plates 1 and 3. 



Gnathopod 2 in the S with thumb subacute and with the outer distal margin obliquely 



