U. S. NATIONAL MUSEUM 



BULLETIN 36, PL. XIX 



Fig. 1. Prodeljjhimis froenatus (F.Cuvier). 



Two varieties. The form of the 



(From Liitken, K. Danske Videnskabs Selskabs Skrifter, 6^ Raekke, v. 1 



body is conventional.) 



Fig. 2. Prodelphinxis frcenatus [F. Qu\\er). 



(From Gray, Synopsis of the Whales and Dolphins, 1868, pi, 25.) 



Genus PRODELPHINUS. 



