ZOOTOMY. 



na 



m.e 



cp.o 



op 



v.Jty 



br.r 



s.op 



FIG. 29. Gadus morrhua. The bones of the skull, disarticulated 

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



0/.J, alisphenoid : an, angular : ar, articular : b.o, basioccipital 

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

 occipital : ep.hy, epihyal : ep.o, epiotic : fr. frontal : h.hy, hypohyal : 

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

 mal : m.e, mesethmoid : m.pt, metapterygoid : ms.pt, mesopterygoid 

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

 pa.s, parasphenoid : p.e, parethmoid : pa, palatine : p.mx, prem axilla 

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

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

 sp.o, sphenotic : sy, symplectic : u./iy, urohyal : vo, vomer : x, articular 

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

 on sphenotic and pterotic : /, articular facet on hyomandibular. 



