This chapter summarizes important morphological features of trematodes belonging to the family Auridistomidae, with key descriptions relevant to the diagnosis of specific genera within the family.

This chapter summarizes important morphological features of trematodes belonging to the family Macroderoididae, with emphasis on key descriptions relevant to the diagnosis of specific genera within the family.

This book chapter describes members of the family Leyogonimidae, which are known parasites of the intestine, mesenteries and hepatic system of birds and mammals. A key to genera of the family Leyogonimidae is also provided.

This book chapter provides a general description of the members of the Family Phaneropsolidae. These parasites are found in intestine of mammals, birds and rarely, reptiles. A key to genera of the Family Phaneropsolidae is also provided.

This chapter presents the morphological characteristics of the members of the Family Pleurogenidae. Members of this family are parasitic to amphibians, reptiles, fishes and mammals. A key to the genera is provided. Illustrations of different species belonging to this family are also included.

This chapter discusses the morphological characteristics of members of the Family Stomylotrematidae. Members of this family parasitize birds. A key to genera is included.