

ZOOLOGY FOR MEDICAL STUDENTS CHAP. 



H. 



op- 



FIG. 148. 



' ^cction through ^ill-Heft- of Haddock: B, a single branchial arch from A shown 

 el; b.a, branchial arch; e, efferent vessel; g.r, gill-rakei?6 ; 



M, month opening with teeth ; oes, Oesophagus ; /', <)]>cn-uhini (that of the left side lias been pulled 

 the Kills more clearly); p.t, pharyn^-al teeth; r.l, respiratory lamellae; 

 lofts. 



