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PROCEEDINGS OF THE NATIONAL MUSEUM 



Figure 20. — Oithona hebes Giesbrecht: a, Al, male; b, left caudal ramus, female from 

 Guayaquil, Ecuador. Oithona nana Giesbrecht: c, female, dorsal; d, female urosome, 

 dorsal; e, male, dorsal;/, male urosome, dorsal; g, Md, female. Oithona oculata Farran: 

 h, female head, lateral; j, urosome segments 1-2, female, lateral, showing P5. 



