Planche 1 issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.228, Fig.76].
Female: a, habitus (left side); b, urosome (dorsal); c, d, forehead (dorsal, left, respectively); e, f, genital somite (left, ventral, respectively); g, left Mx2 (posterior).

Nota: Prosome length 71 % length of body and about 2.3 times length of urosome.
Forehead produced anteriad into a small spiniform process and ventrad into a small rostrum bearing 2 slender filaments.
- Mx2 falcate spine (fig.76 g) of 5th lobe with proximal 68 % of medial margin serrated with spinules; falcate spine of 6th lobe with proximal 73 % of medial margin serrated with spinules. (Compare with H. prolatus fig.79 a and H. guineanensis fig.72 i).

Planche 2 issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.229, Fig.77].
Female: a, exopod of P1 (anterior); b, P5 (anterior).

Male: c, right P5 (with exopod omitted), anterior; d, basipod of left P5 (anterior); e, exopod of right P5 (anterior); f, right P5 (with endopod omitted), posterior; g, left P5 (with endopod omitted), anterior; h, exopod of left P5 (anterior).

Planche 3 issued from : J.M. Bradford-Grieve in The Marine Fauna of New Zealand: Pelagic Calanoid Copepoda. National Institute of Water and Atmospheric Research (NIWA). NIWA Biodiversity Memoir, 111, 1999. [p.86, Fig.54].
Female: A, P5.

Male: B, forehead (dorsal).

Planche 4 issued from : J.M. Bradford-Grieve in The Marine Fauna of New Zealand: Pelagic Calanoid Copepoda. National Institute of Water and Atmospheric Research (NIWA). NIWA Biodiversity Memoir, 111, 1999. [p.86, Fig.54].
Male: C, P5 (L = left leg; R = right leg)

Planche 5 Issued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.518, Fig.226].
Female (from Caribbean Sea & G. of Mexico): 226, habitus (dorsal).
Nota: Head and 1th toracic segment separate, 4th and 5th fused. Caudal rami asymmetrical, left larger with 2nd median seta thick and elongated.

Planche 6 Issued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.520, Figs.227-237].
Female: 227, forehead (lateral); 228, posterior part of metasome and urosome (lateral left side); 229, right Md (biting edge of the mandibular blade); 230, left Md (idem); 231, Mx1; 232, Mx2; 233, Mxp; 234, P1 (anterior).
Nota: Anterior forehead produced into a sharp point. mx1: 2nd inner lobe and basis each with 1 seta; endopod with 3 setae.

Male: 235, habitus (dorsal); 236, forehead (lateral); 237, P5 (anterior).
Nota: Left A1 geniculated. Mouthparts and P1-P4 as in female. P5: basis with a lamelliform inner process fringed with hairs, the process on right basis much higher; 2nd exopodal segment of right P5 with a large, characteristic inner projection.

Planche 7 Heterorhabdus spinifer female:
1 - See key to species groups of Heterorhabdus: ''papilliger'' Group (p.90, 102).
2 - Midanterior tubercular process of forehead produced into a spiniform process (Fig.76-d).P5 without inner marginal seta on 1st endopodal segment (Fig.77-b).

Planche 8 Heterorhabdus spinifer male:
1 - See key to species groups of Heterorhabdus: ''papilliger'' Group (p.90, 102).
2 - Midanterior tubercular process of forehead produced into a spiniform process. Basal inner lobe of left P5 large, rounded distally (Fig.77-g).