OK, this piece has a split personality. It is officially called a Berry Spoon but every reference I found says that it is used for scooping berries and serving casseroles - go figure. In my book, those are two entirely different dishes, unless you consider a blueberry cobler - a casserole. Sometime the bowl may be plain and sometimes it can be shell shaped. Some of these pieces are the most ornate bowl type servers I have seen in sterling and vary greatly between patterns.
(Shown here in Buttercup by Gorham 9 1/8 inches)
(Shown in Arlington by Towle 9 inches)
(Shown in Heraldic by Whiting 8 1/2 inches)