Abstract

The trematodes described below were killed by freezing and later fixed in cold AFA. Specimens thus killed are not contracted or otherwise contorted but compare with specimens anesthetized with menthol before being killed. All specimens examined in this study were removed from the cecum of a single emperor goose collected 80 miles east of Nome, Alaska. Measurements represent the range of variation obtained from 15 specimens. The writer wishes to thank Dr. S. H. Hopkins, Professor of Zoology, Texas A & M College, College Station, Texas, for reading the manuscript and making helpful suggestions.

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