92 



ZOOTOMY. 



ep.o 



Fig. 29. — Gadus morrhua. The bones of the skull, disarticulated 

 and viewed from the left side (| nat. size). 



al.s, alisphenoid : an, angular : ar, articular : l.o, 'basioccipital 

 br.r, branchiostegal rays : c.hy, cerato-hyal : d, dentary : e.o, ex- 

 occipital : ep.hy, epihyal : ep.o, epiotic : /r. frontal : /5./^^, hypohyal : 

 hm, hyomandibular : i.hy, interhyal : i.op, inter-opercular ; Ic, lachry- 

 mal ; m.e, mesethmoid : m.pt, metapterygoid : ms.pt, mesopteiygoid : 

 mx, maxilla : na, nasal : op, opercular : op.o, opisthotic : p, parietal : 

 pa.s, parasphenoid : p.e, parethmoid : pa, palatine : p.mx, premaxilla : 

 p.op, preopercular : pr.o, prootic : pt, pterygoid : pt.o, pterotic : gu, 

 quadrate : s.o, supraoccipital : s.op, subopercular : s.or, suborbitals : 

 sp.o, sphenotic : sy, symplectic : u.hy, urohyal ; vo, vomer ; x, articular 

 facet on parethmoid ; x', articular facet on palatine : y, articular facet 

 on sphenotic and pterotic ; y', articular facet on hyomandibular. 



