1 7 6 



DISCOVERY REPORTS 



keel (cf. fig. 42, 1930). In peraeopod 4 the inner keel is completely concealed in external 

 view, and an apical lobe is scarcely developed. 



One inter-antennal tubercle. 



The colour of no. 1 is given as follows: "Pale yellow. Each of first 7 segments with 

 a transverse pale brown band dorsally along both anterior and posterior margins. Large 

 side-plate of 4th segment largely red-brown. Posterior segments yellow mottled with 

 brown. Caudal appendages and legs pale yellow. Eyes red". 



Distribution. McMurdo Sound, 92-175 m. 



Epimeria acanthurus, Schell. (Figs. 104 b, 108, and Plate I, fig. 2). 

 Schellenberg, 1931, p. 162, fig. 85, and pi. i, fig. g. 



Occurrence : 1 . St. WS 81. Falklands. 1 ovig. $ 22 mm. 



2. St. WS 85. Falklands. 1 $ 11-5 mm. 



3. St. WS 86. Falklands. 1 ovig. $ 21 mm. 



b. c d 



Fig. 108. Epimeria acanthurus, Schell. a. Dorsal profile of peraeon segments 6 and 7 

 and pleon segments 1-4. b, c, d. 2nd (and 3rd) joints of peraeopods 3-5. 



Description. Like puncticulata, Brnrd., but peraeon segments 5 and 6 slightly 

 keeled and ending posteriorly in a short point. Peraeon segment 7 and pleon segments 

 1-3 strongly keeled, the keels beginning near bases of segments, slightly indented in 

 middle of dorsal profile, and ending in prominent subacute apices. Pleon segment 4 

 with sharp-pointed upstanding triangular process. A series of dorso-lateral tubercular 

 processes on peraeon segment 7 to pleon segment 3, faint on peraeon segment 7 (some- 

 times also one on segment 6) and on pleon segments 2 and 3 , consisting of a short ridge 

 or keel near base of segment and a conical tubercle on hind margin. 



Peraeopods 3 and 4, 2nd joint with the point of divergence of the outer and inner 

 keels distal to the rounded basal lobe, inner keel not expanded, lateral longitudinal keel 

 confluent in distal third with the outer keel and forming the subacute apex of the distal 

 lobe, which does not quite extend to apex of 3rd joint. Peraeopod 5, 2nd joint similar 



