U. S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 94 PLATE 2 



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A, Pimelodella chagresi odynea, new subspecies: Holotype (U.S.N.M. No. 121133), 89 mm. 

 In standard length; B, Megalonema platycephalum psammium, new subspecies: Holot\pe 

 (U.S.N.M. No. 121175), 133.5 mm.; C, Cetopsorhamdia skermani, new species: Holotype 

 (U.S.N.M. No. 121216), 30.7 mm.; D, C. picklei, new species: Holotype (U.S.N.M. No. 

 121217), 8<S mm. Retouched photographs. 



