Acanthopsole quatrefagesi Vayssière, 1888 Caloria quatrefagesi is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.

[2] Caloria elegans is morphologically very similar to Facelina quatrefagesi.

[3] Facelina quatrefagesi was considered as a synonym of Caloria elegans, but a combination of DNA evidence and morphological comparison resulted in them being recognised as separate valid species.

[4] This species was described from the Rade de Villefranche-sur-Mer, France.

[1] The typical adult size of this species is 15 mm.