On the exotic Psychids in the Leyden Museum

The collection of exotic Psychids in the Leyden Museum is far from being an extensive one, as there are only four species and the larval cases of two others. One of the latter (notwithstanding its being unique) was worth to be described. Moreover the species were not, or incorrectly named and of course required revision. — Mr. Ritsema kindly allowed me to examine all the specimens and to publish the following results of my examination in the »Notes from the Leyden Museum.” 1. Thyridopteryx ephemeraeformis Steph. — One ♂.