Plate 1 issued from : E.G. Silas & P.P. Pillai in J. mar. biol. Ass. India, 1973 (1976), 15 (2). [p.789, Fig.5].
Female (from Red Sea): a, urosome (dorsal); b, genital segment (ventral); c, urosome (lateral right side), d, P5.

Male: e, urosome (dorsal); f, right A1 (geniculate part); g, P5.
Scale as in Calanopia minor.

Plate 2 Calanopia media.
Female:
1 - P5 exopod 2-segmented.
2 - Cephalic lateral hooks absent.
3 - P5 symmetrical.
4 - Caudal rami symmetrical.
5 - 2nd exopodal segment of P5 longer than 1st one.
6 - 1st exopodal segment of P5 with 2 spines distally.
7 - Genital compound somite with ventral spines.
Male:
1 - Left P5 shorter than right one; basis of left P5 not swollen proximally.
2 - Prosomal posterolateral corner symmetrical.
3 - Cephalic lateral hooks absent.
4 - 2nd urosomite symmetrical and without any processes.
5 - 2nd exopodal segment of right P5 shorter than 1st one, curved at mid-length with 1 short and 1 long setae; basis of left P5 longer than 1st exopodal segment.

Plate 3 Issued from : R. Gurney in Trans. zool. Soc. London, 1927, 22. [p.152, Fig.20].
Female (Port Taufik): A, habitus (dorsal); B, abdomen (ventral); C, P5.

Male: D, habitus (dorsal); E, part of right A1; F, P5.

Nota female:
- Abdomen less than half length of thorax.
- Thoprax 2.5 times as long as broad.
- Last thoracic somite produced symetrically backwards as a pointed process, reaching nearly half length of genital somite.
- Abdomen of 2 somites.
- Genital somite longer than the anal somite (36 : 25). On right side, 2 small spines one above the other, and a small fold of the cuticle is, in some cases but not in all, present on the ventral surface on the right side. Genital operculum round.
- Furcal rami (= caudal rami) a little shorter than anal somite (19 : 21), either quite symmetrical, or right side with a somewhat indented inner margin.
- A1 reaches back to about middle of genital somite and consists of 17 segments.
- P5 symmetrical, 3-segmented. Basal segment fused with basal plate (= intercoxal sclerite). Basipodal segment 2 (= Basis) about same length as exopodal segment 1 , the latter bears 2 strong spines; 2nd exopodal segment with 2 outer spines, of which the proximal is very short, and is prolonged into a terminal spine which extends beyond distal outer spine by about 2/3 of length of latter.

Nota male:
- Relative lengths of thorax, abdomen and furca 63 : 30 : 11.
- Thorax as in female, 2.5 times as long as broad.
- Somites of abdomen symmetrical, without lateral processes.
- Furcal rami divergent to a variable extent, but usually so much so as almost to form a right angle.
- A1 reaches back to end of 2nd abdominal somite.
- Relative lengths of last 6 segments (= 5 somites + caudal ramus) 33 : 39 : 45 : 43 : 31 : 40.
P5 closely resembling those of C. elliptica, but without the scalloped edge to the broad subterminal segment of the right leg.

Plate 4 Issued from : R. Gurney in Trans. zool. Soc. London, 1927, 22. [p.154].
Relative lengths of cephalothorax, abdomen and caudal rami; and the genital double-somite and the 2nd abdominal somite. Comparison between Calanopia media, C. elliptica and C. minor females.