Plate 1 issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.262, Fig.110].
Female: a, habitus (left side); b, urosome (dorsal); c, d, forehead (left, dorsal, respectively); e, genital somite (left); f, idem (with operculum open); g, genital somite (ventral); h, left Mx2 (posterior); i, P5 (anterior).

Nota: Mx2: Posterior subterminal spine of 4th lobe 38% as long as 2nd saberlike spine, which is about as long as 1st saberlike spine; falcate spine of 5th lobe about 1/4 times length of saberlike spine, which proximal 54% of medial margin serrated with spinules; falcate spine of 6th lobe with proximal 67% of medial margin serrated with spinules.

Plate 2 issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.263, Fig.111].
Male: a, P5 (anterior); b, left P5 (endopod omitted), anterior; c, exopod of left P5 (anterior); d, right P5 (endopod omitted), posterior; e, distal end of exopod of right P5 (lateral); f, basipod of right P5 (anterior); g, idem (slightly tilted clockwise); h, idem (posterior); i, second exopodal segment of right P5 (anterior); j, idem (posterior).

Plate 3 Heterorhabdus confusibilis female:
1 - See key to species groups of Heterorhabdus: ''abyssalis'' Group (p.90, 114).
2 - Genital somite without a conical projection mediodorsally (Fig.110- e).
3 - Laterally, genital somite without a tubercular outgrowth posteriorly on dorsal margin (Fig.110-f).
4 - Laterally, genital operculum far short of reaching posterior end of somite (Fig.110-g).
5 - Laterally, right and left genital flanges symmetrical.
6 - Laterally, genital prominence distinctly separate from ventral wall of somite.
7 - Dorsally, as well as ventrally, lateral swellings of genital somite short of reaching posterior end of somite (Fig.110-a, e).
8 - Laterally, genital prominence reaching close to posterior end of somite (Fig.110-e). Posterior subterminal spine of 4th lobe of Mx2 (on 3rd segment) shorter than 1/2 length of saberlike spine (Fig.110-h).

Plate 4 Heterorhabdus confusibilis male:
1 - See key to species groups of Heterorhabdus: ''abyssalis'' Group (p.90, 114).
2 - Basis of left P5 without a well-developed inner lobe (Fig.111-a).
3 - Basal inner lobe of right P5 armed with normal bristles (Fig.111-a, h).
4 - 3rd exopodal segment of right P5 with a short terminal lobe, less than 1/3 length of terminal spine (Fig.111- e).
5 - Basal lobe of right P5 arising from anteromedial side of segment (Fig.111-a).
6 - 2nd exopodal segment of left P5 with outer spine not borne on a conical process (Fig.111-a, b).
7 - 3rd exopodal segment of right P5 with terminal spine longer than 1/2 length of segment (Fig.111-a).
8 - Anteriorly and when tilted clockwise, basal lobe of right P5 recurved without folding (Fig.111-a).
9 - Lateral margin of basal lobe of right P5 forming a narrow angle with medial margin of segment (Fig.111-f).