This work reports upon observations and identifications of 18 leptomedusae, mostly documenting specimens which have been used for previous molecular phylogenetic studies. All species are illustrated, for some of them links to electronically archived photos are provided. The taxonomy of some genera and species is discussed. The diagnosis of the genus NeotimaPetersen, 1962 is modified to accommodate the new species Neotima galeai, the only member of the genus with subdivided gonads. Eutima sapinhoaNarchi & Hebling, 1975 is transferred to the genus Neotima as Neotima sapinhoa (Narchi & Hebling, 1975) n. comb. Helgicirrha schulziiHartlaub, 1909 and Tima planaNeppi, 1910 are both regarded as junior synonyms of Helgicirrha cari (Haeckel, 1864). Eirene octonemalisGuo, Xu & Huang, 2008 is a new junior synonym of Eirene hexanemalis (Goette, 1886).