28 



THE ANGLER-NATURALIST. 



tions of the several bones of which the head of a Perch is 

 composed. 



a. Principal frontal bone. 



ft. Parietal. 



<". Inter-occipital, or par-occipital. 



d. Inter-parietal, or super-occi- 



pital. 



e. Operculum. 



/. Sub-operculum. 

 ff. Inter-operculum. 

 h. Pre-operculum. 

 i. Temporal, or epi-tympanic. 

 k. Tympanal, or pre-tympanic. 

 /. Sympletic, or meso-tympanic. 

 m. Jugal, or hypo-tympanic. 

 n. Posterior frontal, or post-fron- 

 tal. 

 M*. Anterior frontal,or pre-frontal. 



o. Great ala, or ali-sphenoid. 



p. Sphenoid. 



q. Internal pterygoid, or ento- 

 pterygoid. 



r. Transverse, or pterygoid. 



s. Palatal, or palatine bone (bone 

 of palate). 



t. Vomer. 



u. Nasal. 



v. Superior maxillary, or maxil- 

 lary. 



w. Inter-maxillary, or pre-maxil- 

 lary. 



x. Articular portion, and 



y. Dental portion of the lower j aw, 

 or inferior maxillary bone. 



