n8 DISCOVERY REPORTS 



Genus Iphimedia, Rathke. 



Stebbing, 1906, p. 214; 1914, p. 584. 

 Barnard, 1930, p. 346. 



Iphimedia capicola, n.sp. (Fig. 66). 

 Occurrence: St. MS 82. South Africa. 1 $ 4-5 mm. 



Description. Rostrum acute, curved downwards. Eyes oval, reddish. Peraeon seg- 

 ments 1 and 7 much longer than any of the others. Side-plates 1-4 acute below, 

 postero-inferior angles of 5 and 7 rounded, of 6 subquadrate. Peraeon 7 and pleon seg- 

 ments 1-3 each with a pair of procumbent dorsal teeth, pleon segments 1-3 being also 

 medio-dorsally keeled. Postero-inferior angle of pleon segment 1 rounded, of 2 quad- 

 rate, of 3 acutely produced; posterior margin of segment 3 with an acute upturned 

 lateral tooth well above the postero-inferior angle. Telson oval, apex incised, a small 

 denticle near apex on outer margin. 



Fig. 66. Iphimedia capicola, n.sp. a. Peraeon segment 7 and pleon segments 1-5. 

 b. Gnathopod 2. c. Telson. 



Antenna 1, upper apex of 1st joint with one short tooth, lower apex with two teeth, 

 upper and lower apices of 2nd joint both shortly produced, flagellum 12-jointed. 

 Antenna 2, flagellum 16-jointed. Mouth-parts as in obesa (Sars, 1895, pi. cxxxii). 



Gnathopod 1 slender, chelate, 5th and 6th joints subequal, longer than 3rd. Gnatho- 

 pod 2 subchelate, 3rd and 6th joints subequal, a little shorter than 5th, 6th widening 

 slightly to the rounded palm. 



Peraeopod 3, 2nd joint with upper hind angle quadrate, the lower rounded. Peraeo- 

 pods 4 and 5, 2nd joints with upper hind angles rounded, lower angle in peraeopod 4 

 quadrate with a small point, in peraeopod 5 rounded-quadrate. 



Uropods unarmed, except inner margin of outer ramus of uropod 3 which is very 

 minutely setulose. 



Remarks. This is the first record of this genus in South African waters, as Dana's 

 Iphimedia capensis is a Paramoera. The species is close to obesa and to the Australian 

 discreta, Stebb. 1910, but the 6th joint of gnathopod 2, position of the lateral tooth on 

 pleon segment 3, and the telson are distinguishing marks. 



