MONOGENETIC TREMATODES OF GULF OF MEXICO FISHES. PART I. THE SUPERFAMILY GYRODACTYLOIDEA

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Abstract
This is the first of a series of papers on monogenetic trematodes from fishes of the Gulf of Mexico. Hosts were collected from various places on the north and east coasts of the Gulf while the author was at the Alligator Harbor Marine Laboratory of the Florida State University, 1951-54. The gyrodactylid flukes. Gyrodactylus funduli, from Fundulus similis. Gyrodactylus prolongis from Fundulus grandis. Gyro-dachylus sp. from Cyprinodon variegatus and Gyrodactylus stephanus Mueller. 1937 from F. grandis are described and discussed. It is suggested herein that the subfamilies Gyrodactylinae and Isancistrinae are probably advanced rather than primitive as is now generally believed. The tetranochid, Amphibdelloides narsine. from Narcine brasiliensis is described. The systematics of the subfamily Tetranochinae are considered in an unsatisfactory state. Several measures for correcting this condition are suggested. Part II of this series continues presentation of data on the subfamily Tetranonchinae.