H'oCJd Vol. 81, pp. 351-366 30 August 1968 PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON MONOGENETIC TREMATODES FROM THE SOUTHERN PACIFIC OCEAN. PART IV. / POLYOPISTHOCOTYLEIDS FROM NEW ZEALAND FISHES: THE FAMILIES MAZOCRAEIDAE, DICLIDOPHORIDAE AND HEXABOTHRIIDAEi By William Arthur Dillon^ and William J. Haegis, Jr. Virginia Institute of Marine Science, Gloucester Point, Virginia This is the fourth paper of a series on monogenetic trema-todes of fishes of the southern Pacific Ocean. This installment deals specifically with several species belonging to the families Mazocraeidae Price, 1936, Diclidophoridae Cerfontaine, 1895, and Hexabothriidae Price, 1942 of New Zealand fishes. The scope, organization, and purpose are the same as for the first installment. Materials and Methods: Methods used in the preservation and the preparation of the monogenetic flukes for identification and study are essentially the same as those given by Dillon and Hargis ( 1965 ) . AH measurements were made with the use of a filar micrometer and are given in microns unless otherwise noted. In indicating these measure-ments the mean is given, followed by the range (minimum and maxi-mima) in parentheses. The number of measurements used in the calcula-tions appears in parentheses before these data. Measurements of curved structures are across the Hnes subtending the greatest arcs described by those structiures. In the measurements to follow, length — of the body, its appendages and most internal organs — refers to the distance along the anteroposterior axis except where otherwise noted. Width refers to a measurement made 1 This entire research is supported by grants GA-13853, with amendments, and GA-235 under the United States Antarctic Research Program of the National Science Foundation. Contribution No. 276 from the Virginia Institute of Marine Science, Gloucester Point, Virginia 23062. ^Present address: University of Southern Mississippi, Southern Station, Box 1631, Hattiesburg, Mississippi 39401. 38— Proc. Biol. Soc. Wash., Vol. 81, 1968 (351)
Monogenetic Trematodes From The Southern Pacific Ocean. Part 4. Polyopisthocotyleids From New Zealand Fishes: The Families Mazocraeidae, Diclidophoridae And Hexabothriidae
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