Malawidopsis gen. nov. cunningtoni comb. nov. (Sars, 1910) (= spec. F)

Fig. 18F

Abbreviated description: sub-triangular Cp in lateral view, with anterior margin widely rounded and posterior margin bluntly pointed. RV overlapping LV, but less pronounced. In dorsal view, Cp relatively wide, with rounded lateral sides, greatest width situated in the middle. External valve surface smooth, set with few setae.

Measurements: length of female = 519–595 µm; length of male = 511–519 µm.

Localities:

Original locality of Malawidopsis cunningtoni (Sars, 1910):

Sample 14, collected by Dr Cunnington on 17/06/ 1904 in Monkey Bay, Lake Nyasa (= Lake Malawi). No further information available, but it is assumed that all samples were taken from the shallow littoral.

1999 Usipa Localities: Metangula, Mozambique, at 7 m depth (21/3/1999).

Domira Bay, Malawi at 10 m depth (25/3/1999).

S.E. Arm, Malawi at 10 m depth (26/3/1999).