Possible Duplicate:
Is it proper usage to replace a comma in a list with a semi-colon in this situation (see details)?
Is it ever appropriate to use semicolons to separate elements in a list that follows a colon?
For example: I packed several items for my trip to Europe: shoes; shirts; boots; hats; and gloves.
I realize that S&W (4th edition, page 7) advises writers to use commas between a list's elements, but I'm seeing semicolons in a published academic journal, and I'm wondering whether usage has changed since S&W's release.