Amarylloidinae is a now obsolete informal name for an "infrafamily" within the Amaryllidaceae (Amaryllis) family, erected by Hamilton Traub.
This grouping was designed to fill a perceived gap between the formal rank of subfamily and tribes.
On the other hand, he also used a much more restricted Amaryllidaceae corresponding to Traub's subfamily Amarylloideae.
Thus Traub's Amarylloideae most closely resembles subfamily Amaryllidoideae sensu APGIII.
For a table of Traub's infrafamilies and tribes, and their subsequent disposition, see Subdivision of Amaryllidoideae.