'>v. OCCASIONAL PAPERS OF THE California Academy of Scietit No. 110, 37 pages, 8 figures, 6 tables. DESCRIPTIONS OF FIVE NEW SPECIES OF MYCTOPHID FISHES FROM THE PACIFIC, INDIAN, AND ATLANTIC OCEANS By Robert L. K'isner Scripps Institution of Oceanography, La Jolla, California 92037 Abstract: Five new species of myctophid fishes are described and are compared with closely related forms. Three of the new species, two in the genus Diaphus and one in the genus Lampanyotus ^ occur in warm waters of the eastern and central North Pacific Ocean; of the remaining two species, both in the genus Lampanyctus j one occurs in the eastern tropical Atlantic Ocean, and one in both the western tropical Pacific and the Indian oceans. Introduction The five new species described below are referable to three distinct species groups and are treated under three sections; related species are discussed. In the first section, two of the new species, Diaphus tvaohops and Z). similis^ are referred to a small group of Diaphus y formerly comprised of six nominal species, charac-terized in part by having the preorbital organs, Dn and Vn,
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