Superfamily HABRONEMATOIDEA Chitwood and Wehr, 1932

Preamble: Representatives of the following Families of habronematoids have been reported from Canadian fishes: Cystidicolidae, Hedruridae and Tetrameridae . Of these Families, however, representatives of only the Cystidicolidae have been adequately described and illustrated. Records of larval Hedruris sp. ( Hedruridae) and of larval Tetrameres sp. ( Tetrameridae) are included below for the sake of completeness but neither record can be verified in the absence of descriptions or illustrations. In these circumstances, design of a key to the Families of habronematoids would be superfluous.