Vol. 38 No. 3, 1999
Descriptions of Two New Subfamilies and a New Genus of
Hagfishes (Cyclostomata: Myxinidae)
Biology Research Division, Scripps Institution of Oceanography, La
Jolla, California 92093, USA
L. Wisner (1999) Two new subfamilies of myxinid fishes,
Paramyxininae and Quadratinae, are designated, and a new genus, Quadratus, is described.
Subfamilies Myxininae and Eptatretinae are redescribed. The four
subfamilies are distinguished by the numbers of gill apertures, the
placement of the first (anteriormost) gill aperture relative to the
first gill pouch, the length of the first efferent branchial duct
relative to the last, and the linearity or non-linearity of the
patterns of gill apertures. The putative taxonomic position of
Paramyxine springeri is discussed.
Key words: Myxinidae,