164 Proceedings of the Biological Society of Washington. 



oped on the blind than on the eyed side; gill-rakers rather short, sharp and 

 smooth; anus nearly on ventral ridge. 



Five other species of Poecilopsetta are known (P. maculosa, praelonga, 

 plinthus, colorata and hawaiiensis) . Poecilopsetta beanii is a more slender 

 fish than any of these except P. praelonga, from which it appears to differ in 

 the narrower bands of teeth on the jaws. 



