Warén, A. and C. Mifsud. 1990.Nanobalcis a new eulimid genus (Prosobranchia) parasitic on cidaroid sea urchins, with two new species, and comments on Sabinella bonifaciae (Nordsieck). Bollettino Malacologico 26 37-46. [Stated date: 30 Jun 1990.] {Included species}