Eleven species of the family Cixiidae have been recorded from Canada (Metcalf, 1936, Gen. Cat. Hemip. 4 (2)). Ten of these are represented in the Canadian National Collection. In addition, ten other species are represented by Canadian specimens. Three of these are previously undescribed. The following are descriptions of the new species, keys to the genera and species known to occur in Canada, and distributional notes on the species from specimens in the collection. External characters are used in the keys. These are not always reliable in determining the males of some closely allied species, because of the frequent absence of dark elytral markings in that sex. The male genitalia show good specific characters, and figures of these are given for the species difficult to determine reliably an external characters.