What musical symbol is this? (part 2)

In one piece of music, I noticed a strange new musical symbol (I think ornament is the correct term). It looks very similar to a mordent, but has a small, “c”-shaped curved line that is attached to the front of the squiggle. This ornament does not appear on Wikipedia’s list of musical symbols.

What is the name of this symbol, and more importantly, how do I play it?

As for background information, the piece is a duo written by Bach, so it would be in the Baroque style.