SCIiENID^. 429 



Atlantic, and Indian Ocean. One well known to the ancients, 



Fig. 189. — Umhrina nanus, from Panama. 



under the name of Unibra, is the U^nhrina cirrhosa of the 

 Mediterranean, the " Unibrine " or " Ombre " of the French, 

 and the " Corvo " of the Italians. It ranges to the Cape of 

 Good Hope, and attains a length of three feet. Also on the 

 coasts of the United States several species occur, as U. alhurna, 

 U. nebulosa, etc. 



Soi^NA (including Corvina). — The upper jaw overlapping the 

 lower, or both jaws equal in front. Interorbital space moderately 

 broad and slightly convex. Cleft of the mouth horizontal or 

 slightly obhque. The outer series of teeth is generally composed 

 of teeth larger than the rest, but there are no canines. Eye of 

 moderate size, barbel none. 



Some fifty species are known, but their distinctive char- 



Fig. 190. — SciiEua richarclsonii. 

 acters have been but imperfectly pointed out. They are found 



