Argobuccinum pustulosum, common name the pustular triton, is a species of predatory sea snail, a marine gastropod mollusk in the family Cymatiidae.

[2] The large swollen shell of this species has prominent varices.

The maximum recorded shell length of the synonym Argobuccinum proditor tristanense is 80 mm.

[3] Minimum recorded depth of the synonym Argobuccinum proditor tristanense is 0 m.[3] Maximum recorded depth is 280 m.[3] This Cymatiidae-related article is a stub.

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