U. S. NATIONAL MUSEUM 



PROCEEDINGS, VOL. 82. ART. 18 PL. 18 



Species of Pseudodiaptomus 

 1-3. Pseudodiaptomus culebrensis: 1, Cephalothorax of female; 2, abdomen of male; 3, e.xopod of 



second antenna. 

 4-8. Pseudodiaptomus gracilis: 4, Fifth foot of female; 5, fifth foot of male; 6, abdomen of female. 



