A sinonímia de Gynaecotyla jaegerskioeldi (Travassos, 1920) Yamaguti, 1939 com Gynaecotyla adunca (Linton, 1905) Yamaguti, 1939 é confirmada, com base no estudo morfológico detalhado do cornucótile de espécimes das duas espécies. O cornucótile é um órgão hermafrodita que pode ser formado pelo ovejetor e o duto ejaculador e é um caráter importante na diferenciação das espécies do gênero.

The synonymy of Gynaecotyla jaegerskioeldi (Travassos, 1920) Yamaguti, 1939 with Gynaecotyla adunca (Linton, 1905) Yamaguti, 1939 is confirmed, on the basis of the detailed morphological study of the cornucotyle of specimens of both referred species. The cornucotyle is a hermaphroditic organ that can be formed by the ovijector and the ejaculatory duct and is an important specific diagnostic character.

The first case of a natural avian infection caused by the digenetic trematode Ascocotyle (Phagicola) longa Ransom, 1920 in Brazil, is reported from the ardeid bird Ardea cocoi Linnaeus, 1766. This represents a new host record and data on clinical and pathological findings are also reported.

Ascocotyle (Phagicola) rara sp. n. is described from the intestine of Ixobiyclius exilis (Gmelin, 1789), a Brazilian bittern. The new species is compared with Ascocotyle (Phagicola) angeloi Travassos, 1928 and Ascocotyle (Phagicola) moUieiiisicola (Sogandares-Bernal & Bridgman, 1960); the main distinguishing characters are related to the aspect of the gonotyl that is not perforated in A. (P.) rara sp. n. when compared to A. (P.) mollienisicola and the absence of the crown of spines at the anteriorend in the new species compared withA. (P.) angeloi. This is an important finding, since human infections by Phagicola spp. have been previously reported in Brazil.