oj- the Island of Trinidad^ W. I. 27 



metalKc yellow spots is painted on the side along the anterior 

 portion of the lateral line, and extends to the caudal ; a second 

 row also adorns the sides on a line with the posterior portion. 



The dorsal and anal have oblique dusky bands ; ventrals and 

 pectorals whitish. 



This species is most closely allied to the Perca saxatilis of 

 Bloch, or the Crenicichla saxatilis of Heckel. 



Order. 

 MALACOPTERYGII, Cuvier. 



Svh-order. 

 ABDOMIJSfALES, Cuvier. 



Family. 

 SiLUROiD^, Cuvier. 



Sub-family. 

 PiMELODiN^, Bonaparte. 



Genus. 



PlMELENOTUS,* GiLL. 



Body entirely naked, oblong, slightly compressed or subcy- 

 lindrical anteriorly, and becoming more and more compressed 

 as it approaches the caudal. 



Head slightly compressed laterally, with the profile subconi- 

 cal ; moderately broad above, narrowing very gradually to the 

 muzzle ; the posterior prolongation of the interparietal nearly 

 reaches to the buckler, but is not continuous or united with it ; 

 the bones are covered by a thin, tense, and smooth skin, through 

 which the sculpture or wrinkles of the casque are apparent. 



* lii^tXn, fat, and Nwroj, back, in allusion to the long adipose dorsaL 



