Here are the Sorbet Servers. They are similar in size to the Sherbert servers, however they have more a scoop shape and a elegant shape to them. All the examples I could find were in Tiffany patterns.
Shown in Chrysanthemum by Tiffany (9 1/8 inches)
Shown in Persian by Tiffany (9 inches)
Shown in Richelieu by Tiffany (8 1/2 inches)
Shown in Vine by Tiffany