THE MORPHOLOGY, LIFE-HISTORY, AND SYSTEMATICS OF THE DIGENETIC TREMATODE, HOMALOMETRON PALLIDUM STAFFORD, 1904

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Abstract
The successive stages in the life-history of Homalometron pallidum, a parasite of Fundulus hetero-clitus, described by Linton, 1901 and named by Stafford, 1904, have been discovered and identified. The asexual generations are in Hydrobia minuta and the metacercarial stages are encysted in Gemma gemma, H. minuta, and small polychaete annelids which serve as secondary intermediate and transfer hosts. Knowledge of larval as well as adult stages provides a better basis for determination of the evolution and systematics of the allocreadiid -lepocreadiid trematodes.