See:
http://www.inchem.org/documents/ehc/ehc/ehc37.htm#PartNumber:3
May be the buccinid Babylonia japonica is involved.
With regards
Riccardo Giannuzzi-Savelli
>Hello Conchlers, I have a tough question, I think. I'm reading
>about a rather obscure subject of "Tetrodotoxin-Associated Snail
>Poisonings in China". It seems to be a big problem there with 309
>cases and 16 deaths during the last 25 years.
>
>Here's the question, can anyone direct me to an image of the above
>named snail? Over 90% of the cases are from eating this snail. I
>tried a Google search three ways and had no luck. Thanks. Bert
>Bartleson, Olympia,WA, USA