Zemacies excelsa

Zemacies excelsa is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.

Description
The shell grows to a length of 55 mm. Individuals can grow to 58.2mm and can have a wet body mass of 24.5g. Dead Zemacies excelsa form shallow marine sediments.

Distribution
This species occurs in the Pacific Ocean off New Caledonia and New Zealand.