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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXII. 



This genus appears to be allied to O/tfiracodon., from which it differs 

 in having- a much more elongate alimentary canal and a single series 

 of teeth. 



Type of f/eni/j^. — Thjoflon paraguoyense^ new species. 



Fig. 4.— Enlargkd 'vw hi- iiik i.ntkdmitte.st okgan of Glaki1)U. hthvs iininotati's. <;, third 

 anal, kay; li, fourth anal ray; c. fifth anal ray. 



I. ILYODON PARAGUAYENSE Eigenmann, new species. 



Type. — Cat. No. 55(342, U.S.N. M., a .specimen »>3 nun. long. 

 Paraguay. E. Palmer. 



Cotvpe B-ti nuu. long. Paraguay'. E. Palmer. 



These two specimens were mixed in with some Characins. They 

 are flattened out of shape as though they had been in a press. 



D. 16-18; A. 14-15; scales about 45; head 4; depth probably about 

 the same. Teeth close set, graduated, about 10 on each side of the 



