Plate 1 Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.113, Fig.71].
Female (from 25.082°S, 09.584°E): A-B, habitus (dorsal and lateral, respectively); C, forehead (lateral; D, genital double-somite (lateral left view); E, P1 (anterior view).
Scale bars: 1.0 mm (A, B, D, E); 0.1 mm (C).

Nota:
- Forehead in dorsal view produced into distinct short rounded projection dorsal to base of rostrum, bearing pair of stout small spine-like processes.
- Posterior corners of pediger 5, in lateral view, extended into irregularly-shaped, slightly sclerotised lappets that appear asymmetrical (in illustrated specimen, but possibly symmetrical.
- Posterolateral borders of pediger 4 also extended into symmetrical, irregularly-shaped, lightly sclerotised lappets.
- Genital double-somite symmetrical in dorsal view, with pair of small dorsolateral papillae and ventrolateral swelling; together these features contribute to lateral borders appearing angular when viewed dorsally. Genital segment wider than long (length : width = 0.86), widest at anterior 1/3, with small ventral genital operculum just anterior to midlength, seminal receptacles not observed.
- A1 broken.
- P1 exopod with articulation between exopodal segments 2 and 3 well-developed.

Plate 2 Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.114, Fig.72].
Female: A, A1 ancestrral segments I-IX; B, same, segments X-XV; C, same, segments XVI-XIX; D, P2; E, P3; F, P4; G, P5.
Scale bars: 1.0 mm on all figures.

Nota:
A1 longest remnant with ancestral segment XIX present; ancestral segments II-IV fused. Anterior and posterior borders on ancestral segments XVI-XIX naked.

Plate 3 Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.115, Fig.73].
Female: A, A2; B, Md palp; C, Md gnathobase; D, mx1 (anterior view); E, praecoxal arthrite of Mx1 to show 2 posterior surface setae (anterior view); F, Mx2; G, inner view of distal part of Mx2; H, outer view of endopod of Mx2; I, Mxp.
Scale bars: 1.0 mm (F, I); 0.1 mm on remaining figures.

Nota:
- A2 exopod ancestral segment IV with short seta extending short of distal border of exopodal ancestral segment VIII and bearing short setules.
- Mx1 praecoxal arthrite with 13 setae including 2 on posterior surface and 2 setae on anterior surface, 1 of them small; basal endite 2 with 3 setae; endopodal segments with 2 (unequal), 2 (unequal), 5+1 anterior surface seta.
-Mxp syncoxal endite 4 with longest seta extending beyond distal border of endopodal segment 2.

Plate 4 Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.91, Table 10].
Morphological characters after identification key of Bathycalanus females and males.
Compare to other species of genus.

Main characters identification after species key :
1 - Mx1 praecoxal endite without setae.
2 - Anterior margin of head with 2 very small spine-like processes.
3 - P1 exopod segments 2 and 3 separate;
4 - Pedigerous somites 4 and 5 with laterally extended lappets; Genital double-somite angular anterolateral borders in dorsal view. (male unknown)