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TELEOSTEI 



FIG. 364. 



A, dorsal view, and B, left-side view of the skull and pectoral girdle of Silurus glanis, L. 

 (After Juge, slightly altered.) art, articular ; b, barbel ; br, branchiostegal ; cl, cleithrum ; d, 

 dentary ; epo, epiotic ; eth, mesethmoid ; fr, frontal ; hm, liyomandibular ; iop, interopercular ; 

 mx, maxilla ; na, nasal ; op, opercular ; pmx, premaxilla ; pop, preopercular ; pst, post- 

 temporal ; pt, pterygoid ; ptf, postfrontal ; pto, pterotic ; q, quadrate ; r, radial ; sob, sub- 

 orbital ; soc, supraoccipital ; t.r, transverse process of the compound first vertebra abutting 

 against the cleithrum. 



