This is the second of three volumes of Keys to the Trematoda, a series on the systematics and identification of the Class Trematoda. The book presents the taxa in the Order Echinostomida and some of those in the Order Plagiorchiida, with keys for their identification at the superfamily, family, subfamily and generic levels.

The keys are based on critical examination of specimens by subject experts, and generic diagnoses are accompanied by illustrations of important morphological characters. This volume includes seven echinostomidan superfamilies (the...