406 FISHES. 



names "Old Wife," "Black Sea-bream;" Box, Scatharus, and 

 Ohlata from the Mediterranean and iieiglibouring parts of the 

 Atlantic ; Crenidens and Triptcrodon from the Indian Ocean ; 

 Pachymetopon, Diptcrodon, and Gymnoci'otaplms from the Cape 



Fig. 173. — Tephrwop.s richardsouii, from King George's Sound. 



of Good Hope ; Giixlla and Tcplirccops from Chinese, Japanese, 

 and Australian Seas ; Boydixodon from the Galapagos Islands 

 and the coasts of Peru. 



Second Group — Haplodadylina. — In both jaws fiat and 

 generally tricuspid teeth ; no molars ; vomerine teeth. The 

 lower pectoral rays simple, not branched. Vegetable feeders. 

 Only one genus is laiown, Haplodactyhis, from the temperate 

 zone of the Southern Pacific. 



Third Group — Sargina. — Jaws with a single series of 

 incisors in front, and Avith several series of rounded molars on 

 the side. One genus is known, Sargus, wliich comprises 

 twenty species ; several of them occur in the Mediterranean 

 and the neighbouring parts of the Atlantic, and are popularly 

 called " Sargo," " Sar," " Saragu : " names derived from the 

 word Sargus, by Avhich name these fishes were well known 

 to the ancient Greeks and Romans. One of the largest species 

 is the "Sheep's-head" (Sargus ovis), from the coasts of the 

 United States, which attains to a weight of 15 lbs., and is 

 highly esteemed on account of the excellency of its fiesh. 

 Singularly enougli, this genus occurs also on the east coast of 

 Africa, one of these East- African species being identical with 



