Plate 1 issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.251, Fig.99].
Female: a, habitus (left side); b, urosome (dorsal); c, d, genital somite (ventral, left, respectively).

Nota female:
- Cephalosome 45 % length of prosome.
- Prosome 71 % length of body and about 2.4 times length of urosome.
- Posterolateral corner of prosome rounded, overlapping anterior 1/10 length of genital somite.
- Urosome 29 % length of body.
- Length ratios of 4 urosomal somites and left caudal ramus 37.7 : 18.8 : 14.1 : 8.8 : 20.6 = 100.
- Dorsally, genital somite widest at middle, slightly asymmetrical, with a broadly curved right margin and a slightly sigmond left margin.
- Anteriorly, caudal ramus with 2 pores. Dorsal appendicular seta of left caudal ramus about 1.5 times length of that of right ramus.
- A1 extending beyond posterior end of caudal ramus by its last 2 segments.
- All cephalosomal appendages and swimming legs similar to those of H. americanus.

Male: e, right P5 (anterior); f, g, basipod of right P5 (anterior, tilted clockwise, respectively); h, left P5 (anterior); i, exopod of left P5 (anterior).

Nota male:
- Prosome 73 % length of body and about 2.6 times length of urosome.
- Urosome 28 % length of body.
- Caudal rami and setation as in female.
- Left geniculate A1 similar to that of H. spinifrons
- All other cephalosomal appendages and P1-P4 as in female.

Plate 2 Heterorhabdus cohibilis female:
1 - See key to species groups of Heterorhabdus: ''abyssalis'' Group (p.90, 114).
2 - Genital somite without a conical projection mediodorsally (Fig.99- a, d).
3 - Laterally, genital somite without a tubercular outgrowth posteriorly on dorsal margin (Fig.99-a).
4 - Laterally, genital operculum far short of reaching posterior end of somite (Fig.99-c).
5 - Laterally, right and left genital flanges symmetrical.
6 - Laterally, genital prominence distinctly separate from ventral wall of somite (Fig.99-d).
7 - Dorsally, as well as ventrally, lateral swellings of genital somite reaching posterior end of somite (Fig.99-b).
8 - Laterally, genital prominence far short of extending to posterior end of somite; genital somite with a low dorsal hump.
9 - Laterally, genital operculum far short of reaching posterior end of genital prominence (Fig.99-d).

Plate 3 Heterorhabdus cohibilis 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.99-h).
3 - Basal inner lobe of right P5 armed with normal bristles (Fig.99-e, g).
4 - 3rd exopodal segment of right P5 with a short terminal lobe, less than 1/3 length of terminal spine (Fig.99-e).
5 - Basal lobe of right P5 arising from anteromedial side of segment (Fig.99-e).
6 - 2nd exopodal segment of left P5 with outer spine not borne on a conical process (Fig.99-h).
7 - 3rd exopodal segment of right P5 with terminal spine longer than 1/2 length of segment (Fig.99-e).
8 - Anteriorly and when tilted clockwise, basal lobe of right P5 recurved by folding.
9 - Anteriorly, basal lobe of right P5 slightly folded (Fig.98-e).
10 - Basal lobe of right P5 not conspicuously inflated distally (Fig.99-g).