CATALOGUE OF VERTEBRATES. 759 



" This is not a common species on our coast, and when met 

 with is associated with allied species. As an article of food they 

 are not much prized." 



MBBLUCIUS, Raf. 

 M. bilinearis, Mitch. (Siomodon, Oadus, albidus.) Hake. 



Grayish ; darker above, silvery below ; inside of mouth dusky 

 blue; top of head with W- shaped ridges; teeth not very large; 

 pectorals and ventrals long ; scales larger than in allied species ; 

 excavation on forehead ; eye somewhat large ; edge of preopercle 

 free ; mouth large, oblique ; lower jaw longer, with slender teeth 

 in two series, the inner movable, no barbel; branchiostegals 

 seven ; second dorsal and anal deeply emarginate. Dorsal rays, 

 13 + 41 ; anal rays, 40; lateral-line scales, 100 to 110. Large 

 and voracious. Of little value for food. 



"A rare species, that is, as an apparent straggler, found asso- 

 ciated with the common cod and the haddock." 



Order HETEROSOMATA. 



Flat Fishes. 



Family PLEURONECTIDiE. 



Flonnders. 



Cranium anteriorly twisted to allow both eyes on one side ; dorsal 

 long ; body very flat, oval in outline ; blind side plain and lower- 

 most; cranium symmetrical in young, becoming twisted during 

 development, and at same time the horizontal position of body is 

 assumed; sometimes one eye moves through the cranium to reach 

 the opposite side ; no air-bladder ; vent near head ; scales small ; 

 lateral line usually extends on to caudal fin ; pectorals and ventrals 

 near together. 



