What type of spoon is this?

This is a William Wilson and Son sterling spoon with a gilt bowl. It is 6.75" in length. Does anyone know what type of spoon it is? Sugar? Jelly? Berry? Thanks for the help.
Also, is there a website that shows the different forms of 19th century flatware? I did find a book called Silver Flatware Dictionary by Osterberg and Smith. Thanks.