When writing (p. 330) on the genus Apista, F. Smith, 1861, I unfortunately overlooked the fact that the generic name is long preoccupied (Apista, Hübn, 1816, and the similar Apistus, Cuvier, 1829). The bee genus from Brazil may therefore be known as Egapista, n. n., type Egapista opalina (Apista opalina, Smith).

I find that the name of the African bee-genus Serapis, F. Smith, 1854, is also preoccupied (Serapis, Link, 1830); it may be changed to Serapista; type Serapista denticulata (Serapis denticulatus, Smith).

The name Eumorpha proposed by Friese for a group of bees, is also preoccupied. The group Rhodocentris, Friese, includes the type of the prior Heterocentries, Ckll.; so the latter name must be used for the group, unless (as seems probable) it can be divided.