Siphonalia pfefferi , common name Pfeffer 's whelk , is a species of sea snail , a marine gastropod mollusk in the family Buccinidae , the true whelks .
Siphonalia pfefferi , true name Pfeffer 's whelk , is a species of sea snail , a marine gastropod mollusk in the family Buccinidae , the common whelks .