http://www.gastropods.com/1/Shell_9921.html
http://www.gastropods.com/4/Shell_3804.html
http://www.gastropods.com/5/Shell_3805.html
1.無色帶.
2.有色帶,瘤較少.
3.有色帶,瘤較多.
不知大家的看法如何.
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