Abstract
Paracuaria adunca (Creplin, 1846) Anderson and Wong, 1981 from the oesophagus of Ring-billed Gulls (Larus delawarensis Ord) of Lake Ontario, Canada, is redescribed. The following synonyms are recognized: Paracuaria tridentata (Linstow, 1877); P. macdonaldi Rao, 1951; Rusguniella transcaucasica Solonitsin, 1932; Streptocara rissae Kreis, 1958. Paracuaria adunca, now generitype of the genus, is apparently a widely distributed species in fish-eating birds. Paracuaria formosensis (Sugimoto, 1930) is transferred back to the genus Streptocara. The status of P. soricis Jancev, 1972 of shrews is doubtful; it is not likely a member of Paracuaria. Paracuaria adunca is the only recognized member of Paracuaria.

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