Conakry, Guinée

taken by snorkel at 2-3 m depth

H. 40.5 mm - W. 44.0 mm

Dakar, Senegal

trawled at 15-20 m depth

H. 40.6 mm - W. 42.6 mm

Pointe Noire, Congo

trawled on sandy bottom

H. 40.0 mm - W. 42.5 mm

Dakar, Senegal, West Africa

trawled at 20 m depth

H. 40.9 mm - W. 43.6 mm

Angola, West Africa

trawled at 15-20 m depth in sand

H. 47.2 mm - W. 49.9 mm

Dakar, Senegal

trawled at 20 m depth in sand & mud

H. 41.3 mm - W. 44.8 mm