PERCAD^E. 



Peristedion (Cuv.). As Trigla, but the body is 

 encased in hexagonal plates ; and the snout runs 

 out in two points ; no teeth. 



P. cataphracta. Fig. 321 ; J n. s. 



321 



FAMILY XII. 



Body oblong, usually deep in the middle, clothed 

 with rough scales ; gill-covers armed with spines, 

 or cut into teeth; both pairs of jaws, palate, and 

 vomer set with teeth, which are usually minute 

 and close like the pile of velvet ; sub-orbitals con- 

 nected with the temporal bones, and not with the 

 gill-covers. 



Mullus (Linn.). Surmullet. Head and fore parts 

 thick; profile abrupt, nearly vertical ; lower jaw 

 carrying two filaments ; gill-cover scaly, without 

 spines ; two dorsals. 



M. surmuletus. Pig. 322 ; \n.s. 

 barbatus. 



Trachinus (Linn.) . Weever. Compressed ; eyes 

 near together; mouth oblique; gill-cover ending 



