Proceedings of the United States National Museum SMITHSONIAN INSTITUTION • WASHINGTON, D.C. Volume 123 1967 Number 3623 Caritus, a New Genus of Caligoid Copepod, With a Key to the Genera of Caliginae By Roger F. Cressey Associate Curator, Division of Crustacea A small collection of copepods parasitic on Chanos chanos (Forskal), the milk fish, from Nosy Be, Malagasy Republic, has brought to light a new genus of caligoid copepod described herein. The copepods were collected during the author's participation in the International Indian Ocean Expedition and he acknowledges the National Science Founda-tion-U.S. Program in Biology for supporting the field portion of this work. All material has been deposited in alcohol in the U.S. National Museum. All drawings were made with the aid of a camera lucida. Caligidae: Caliginae Caritus, new genus First 3 thoracic segments fused with head. Fourth thoracic segment free. Lunules present. Dorsal plates absent. Postantennal process (maxillary hook) and sternal furca absent. First antenna 2-segmented. Second antenna with well-developed claw. Maxilliped with strong claw. Legs 1-3 biramose. Leg 1 exopod 2-segmented, endopod rudimentary, 1-segmented. Leg 2 with both rami 3-segmented. Leg 3 exopod 3-segmented, endopod 2-segmented. Leg 4 uniramose, exopod 3-seg-mented. Leg 5 present. Leg 6 present in male only. Genital segment l
BioStor
