(Figs. 24 H; 25 C, D, G, H; 26 A, B)
Studied material (coordinates, depth and sediment see Appendix). RV “Polarstern”, ANT XV/3 station 148: adult female or A-1 female (1.77 mm).
Description of adult female (or A- 1 female) (Fig. 24 H). Length 1.77 mm.
Second antenna (Fig. 25 H). Endopodite: first joint only with 1 distal seta.
Mandible (Fig. 26 A, B). Basale: dorsal margin with 7 setae, 5 near middle and 2 subterminal; lateral surface with 5 setae; ventral margin with 3 distal setae.
Sixth limb. Epipodial appendage with 3–4 setae.
Seventh limb. Each limb with 11 setae, 5 (2+3) in distal group and 6 (3+3) in proximal group; each seta with 3– 5 bells. Terminal comb with 13 alate teeth; 2 pegs present on opposite comb.
Caudal furca. Limb with 9+10 claws.
Remarks. Carapace and limbs are similar to Kornicker’s and our specimens of P. heptathrix. It differs in the following: first endopodial joint of second antenna only with 1 distal seta.