206 



ZOOLOGY 



SECT. 



This immense group includes the greater number of marine 

 fishes (Fig. 829), as well as many fresh-water forms : the Perch, 



Fio. 829. Sebastes percoides. ID: m. branchiostegal membrane ; d.f. spiny portion of dorsal 

 fin ; d. f.' soft portion ; mx. maxilla ; op. opercular ; pet. f. pectoral fin ; p.mx. pre-maxilla ; 

 pr. op. pre-opercular ; pv.f. pelvic fin; i: f. spiny portion of ventral fin; r. /.'soft portion. 

 (After Richardson.) 



Stickleback, Sea-bream, Mullet, Mackerel, and Gurnard may be 

 specially mentioned. 



^lib-order d. Pha ryngognathi. 



Teleostei in which the right and left bars of the fifth branchial 

 arch are fused to form a single bone in the floor of the mouth 

 (Fig. 830, B). The remaining characters are as in Acanthopteri. 



Including the Wrasses (Fig. 830) and their allies. 



FIG. 830. Labrichthys psittacula (Wrasse), (/./.hard dorsal; '/./.' soft dorsal ; lp. lips ; 

 pet. f. pectoral fin ; /. f. pelvic fin ; ?. f. ventral fin. B, inferior pharyngeal bone of 

 Labrichthys. (A, after Richardson ; B, after Owen.) 



