A piece of an unknown cone

[conchylinet]

Hello,
Sadly I found this part of a cone shell in Mauritius but I cannot identify it. It was in a sandy area about 20m deep.

Can somebody tell me what specie it could belong?
The piece is 60mm long, the full shell was perhaps 70mm.

<img src="http://www.conchylinet.com/Images/Misc/50849.JPG" alt="http://www.conchylinet.com/Images/Misc/50849.JPG" style="border:0" />

Thank you,
Conchylinet.

[paul monfils]

This appears to be a piece of a Conus janus, a species common in that area and extremely variable in color and pattern.

[conchylinet]

Thanks a lot Paul. Your id match. It is a piece of C. janus. Cheers. Pierre.