PERCAD^. 



201 



Peristedion (Ciw.). As Tngla, but tlie body is 

 encased in hexagonal plates; and tlie snout runs 

 out in two points ; no teeth. 



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



321 



Family XII. Peecad^. 



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. 



Mullns (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. Fig, 322 ; \ n.s. 

 barbatus. 



TracMnus (iAww.). Weever. Compressed; eyes 

 near together ; mouth oblique ; gill-cover ending 



