PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



issued imi\\^\X uSi^l ^y '^* 



SMITHSONIAN INSTITUTION 



U. S. NATIONAL MUSEUM 



Vol. 94 Washington: 1944 No. 3177 



PARASITIC COPEPODS IN THE UNITED STATES 

 NATIONAL MUSEUM 



By Charles Branch Wilson ^ 



This report completes the identification and description of all the 

 parasitic copepods in the United States National Museum collection. 

 During the progress of identification 14 species and 1 variety were 

 found to be new to science, and 6 of these required the establishment 

 of new genera for their reception. This material also contained the 

 missing sex of 6 other species of which one sex liad already been 

 described and figured. In addition one new name has been bestowed. 

 These 22 additions to the parasitic copepods previously laiown are 

 described and discussed in systematic order as follows: 



CALIGOIDA 



Dysgamus atlanticus Steenstrup and Liitken New female p. 531 



Lepeophtheirus christianensis, new species Both sexes p. 533 



Lepeophiheirus eminens, new species Both sexes p. 535 



Lepeophtheirus marcepes, new species Female only., p. 536 



Achtheinus dentatus Wilson New male p. 537 



HARPACTICOIDA 



UnicaJteutha ovalis, new genus and species Both sexes p. 541 



CYCLOPOIDA 



Ostrincola gracilis, new genus and species Both sexes p. 543 



Parmulodes verrucosa, new genus and species Female only., p. 545 



Pestifer agilis, new genus and species Female only., p. 546 



1 Dr. Wilson died on August 18, 1941, a few weeks after the manuscript of this paper 

 was submitted. — Editor. 



520 

 558871—44 



