Stenocypris major (Baird, 1859)

Figures 24 and 25.

1859 Cypris cylindrica, Sow., var. major, Baird. — Baird: 233, pl. 63, fig.4.

1886 Cypris malcolmsoni, G. S. Brady—Brady: 297, pl. 38, figs. 5–7.

1889 Stenocypris malcolmsoni (Brady) — Sars: 28 –34, pl. 1, figs. 7,8, pl. 5, figs. 1–4.

1969 Stenocypris cylindrica major (Baird, 1859) — Ferguson: 68, figs.1(1), 3.

Material examined: One female and four female valves from WN5, one female (ECNU 20170417/HN18) dissected.

Dimensions: Female, RV, n = 3, length 1.973 –2.019 mm, height 0.730 –0.770 mm; LV, n = 1, length 2.005 mm, height 0.756 mm.

Description: Carapace green. In lateral view, carapace elongated. Dorsal margin arched. Anterior end slightly wider than posterior. Septa narrow along free margins (Fig. 24B). LV overlapping RV anteriorly and posteriorly. Natatory setae on A2 reaching to or slightly exceeding tips of terminal claws. UR asymmetrical. Right UR stronger than left UR (Fig. 25). Claw Gp about half length of claw Ga. Seta Sa equals length of claw Ga.

Distribution: In China, this species has been found in Sichuan and Chongqing (Huang 1986), Hubei, Guangdong and Yunnan (Chen 1982), Jiangxi (Zhang et al. 1994) and Zhejiang (Yu et al. 2005). This species was found in Wanning on Hainan Island.

Remarks: These are the largest specimens of S. major found in China.