Abstract
Karyotypes of three ranid species from Hong Kong were studied. Amolops hongkongensis, with 2n=26 chromosomes consisting of seven metacentric and six submetacentric pairs in both sexes, has secondary constrictions on the longer arms of pair 7. The species is karyotypically closer to A. ricketti than to species from western China. Rana exilispinosa, also with 2n=26 chromosomes but consisting of eight metacentric and five submetacentric pairs and lacking secondary constrictions in both sexes, is karyotypically similar to R. spinosa and R. shini. This supports the validity of the recently proposed subgenus Quasipaa. Rana livida, again with 2n=26 chromosomes of eight metacentric and five submetacentric pairs, has secondary constrictions on the longer arms of pair 10 and differs from the Anhui population. This species is suggested to be karyologically closer to members of the subgenus Odorrana than to those of Eburana.
