266 sci^xiDiE. 



Tho upper jaw overlapping the lower, or both the jaws 

 equal ; dorsal not scaly ; no large canines ; the space 

 between the eyes moderately broad and slightly con- 

 vex. Anal spines rather feeble, more or less indi- 

 stinct 7. SCI^NA. 



The upper jaw overlapping the lower, or both the jaws 

 equal ; dorsal not scaly ; no large canines ; the space 

 between the eyes moderately broad and sUghtly con- 

 vex. Anal spines strong 8. Corvina. 



The lower jaw longest ; generally large conical canines ; air- 

 bladder with two elongated horns 9. Otolithus. 



The lower jaw longest ; large arrow-shaped canines ; air- 

 bladder with two elongated horns 10. Ancylodon. 



The space between the eyes very broad and very convex ; 



eye small ; cleft of the mouth very wide and oblique... 11. Colliciithy.s. 



Eye small; limbs of the proeoperculum with a scaleless 



space 12. Nebris. 



1. LARIMUS. 



Larimiis, Cuv. Sf Val. v. p. 145. 

 Corvina, sp., Cuv. 4" Val. v. p. 139. 



Body oblong ; nmzzle shorter than the eye, with the cleft of the 

 mouth oblique, and the lower jaw longer than tho upper. No large 

 canines. No barbel. Dorsal fin not scaly. Pseudobranchise ; the 

 air-bladder simple. Pyloric appendages in moderate number. 



Tropical parts of the Atlantic, entering the rivers. 



1. Larimus auritus. 



Cuv. Sf Val. viii. p. 501. 



D. 11 1 -. A. ^. L. lat. 50. L. transv. ^. Vert. 11/15. 



The height of the body equals the length of the head, and is 3| in 

 the total. The diameter of the eye is nearly one-fourth of the length 

 of the head, and equals the interspace between the eyes, but is 

 rather longer than the snout. Lower jaw slightly prominent ; the 

 upper ma:^ary does not reach to below the middle of the eye. The 

 spinous dorsal is one-foiu-th higher than the soft ; caudal fin slightly 

 notched ; the pectoral is pointed and rather elongate, and reaches to 

 the level of the vent. Coloration nearly uniform, with more or less 

 distinct longitudinal bands along each series of scales. A black spot 

 on a part of the opercular membrane, filling a deep notch of that 

 bone. Dorsal fins grey, with a series of small blacldsh spots along 

 the base ; the other fins minutely dotted with black. 



Coast of Gorea ; River Niger. 



a. Fine specimen. River Niger. From Mr. Fraser's Collection. 

 h. Adult. River Niger. From Mr. Fraser's Collection. 



