Buccinulum robustum

Buccinulum robustum is typically between 13 and 15 mm in length,^[3] and can grow up to 20.6 mm by 9 mm.^[4] It is recognisable by its strong axial ribs. Specimens vary in colour from black and pink to uniformly white.^[3] Some specimens of Buccinulum robustum were originally described as two different species (Buccinulum robustum and Buccinulum suteri), with the name Buccinulum suteri given to specimens with finer spiral sculptures.^[3] Buccinulum suteri was later synonymised with Buccinulum robustum.

The species is Endemic to New Zealand.^[2] The holotype was first identified at Port Fitzroy on Great Barrier Island.^[5] While primarily found on the east coast of the North Island, in 1995 the first specimens were identified to the west of the Aupouri Peninsula.^[6]