SEA-BREAMS. 407 



S. nod from the Mediterranean, These fishes evidently feed 



Fig. 174.— The Sheep's-head, Sargus ovis, of North America. 



on hard-shelled animals, which they crush with their molar 

 teeth. 



Fourth Group — Pagrina. — Jaws with conical teeth in 

 front and molar teeth on the sides. Feeding, as the preced- 

 ing, on hard-shelled animals, like MoUusks and Crustaceans. 

 TMs group is composed of several genera : — 



Lethrinus. — Cheeks scaleless. Body oblong, covered with 

 scales of moderate size (L. lat. 45-50). 

 Canine teeth in front ; lateral teeth i^^V/^.^^'^S^r/f'^. 

 in a single series, broadly conical or 



molar-like. Formula of the fins : lira5*&!fiS5*5^^-'^&%l?s5-4'; 

 D. V, A. f. 



More than twenty species are 

 known, all of which, with one excep- 

 tion, occur in the tropical Indo- 

 Pacific. The species, forming this 

 exception, occurs, singularly enough, "^'°" i^'S-— Scale of Lethrmns. 

 on the west coast of Africa, where more than one Indian genus 



