. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. CALLIOPIIDAE 165 6th joint obviously longer than 5th, palm slightly oblique and concave, defining angle with three spines. Peraeopods 3-5, 2nd joint with hind margin distinctly serrate. Uropod 3, peduncle and rami as described above for novae-zealandia. Remarks. The tooth of peraeon segment 7 is often absent in juvenile examples. The notching on the telson is variable, but the general shape of the telson is constant and easily distinguished from that of the other species. It is probable that som
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. CALLIOPIIDAE 165 6th joint obviously longer than 5th, palm slightly oblique and concave, defining angle with three spines. Peraeopods 3-5, 2nd joint with hind margin distinctly serrate. Uropod 3, peduncle and rami as described above for novae-zealandia. Remarks. The tooth of peraeon segment 7 is often absent in juvenile examples. The notching on the telson is variable, but the general shape of the telson is constant and easily distinguished from that of the other species. It is probable that some at least of Chevreux's specimens were the same as these. He records that the specimens before him had either three, or two, or no dorsal teeth; but the postero-inferior angle of pleon segment 3 does not seem to have been examined. I must confess that in studying the Terra Nova collection the current opinion as to a "widely distributed" species probably allayed the critical faculties. A re-examination of the two specimens from the Antarctic recorded in that report would, I expect, prove them to be distinct from the New Zealand species, and either this or the next species. Oradarea bidentata, (Figs. 96 b, 98). ? Walker, 1903, p. 56, pi. x, figs. 77-89 (O. longimana). ? Barnard, 1930, p. 369 (part, Leptamphopiis novae-zealandiae, rum Thorns.). Occurrence: 1. St. MS 67. South Georgia. 4^8-iomm., 2 $$ 10-11 mm., 3 ovig. $$9-10 mm. Types. 2. St. MS 71. South Georgia. 9 $$ 6-8 mm. 3. St. MS 74. South Georgia. 7 SS 9-10 mm., 1 $ 11 mm., 1 ovig. $ 9 mm. Description. Integument as in tridentata. Only pleon segments 1 and 2 with dorsal teeth, which are acute when viewed dorsally. Post-antennal angle of head rounded-quad- rate. Eyes subcircular, rather large, pale. Pos- tero-inferior angle of pleon segment 2 with a short point, of segment 3 broadly rounded, with a small notch on posterior margin. Side- plate 1 slightly widened below. All side-plates obscurely serrulate. T
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