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- Contradusta walkeri continens (Iredale, T., 1935) 
- Contradusta walkeri surabajensis Schilder, F.A., 1937 
- Contradusta walkeri walkeri (Sowerby, G.B. I, 1832) 
The shells of these common cowries reach on average 19–23 millimetres (0.75–0.91 in)of length, with a minimum size of 14 millimetres (0.55 in) and a maximum size of 39 millimetres (1.5 in). The shape is usually oval, the dorsum surface is smooth and shiny, the basic color is pale brown, with a wide dark brown trasversal band and some small irregular brown patches on the top. The margins are white, with several brown dots. The base may be white, purple or cream and the wide and sinuous aperture shows long labial teeth. The interior of the shell may be purple. In the living cowries the mantle is transparent, with short sensorial papillae.
They live in tropical subtidal waters and in continental shelf at about 5–25 metres (16–82 ft) of depth, usually on coral reef or under rocks.
- Contradusta walkeri (Sowerby I, 1832) . WoRMS (2009). Contradusta walkeri (Sowerby I, 1832) . Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=530913 on 24 October 2010.
- Gastropods.com : Contradusta walkeri continens; accessed : 24 October 2010
- Gastropods.com : Contradusta walkeri surabajensis; accessed : 24 October 2010
- Gastropods.com : Contradusta walkeri walkeri; accessed : 24 October 2010