28 



THE AJfGLEK-NATUEALIST. 



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

 composed. 



a. Principal frontal bone. 

 h. Parietal. 



c. Inter-occipital, orpar-occipital. 



d. Inter-parietal, or super-occi- 



pital. 



c. Operculum. 



/. Sub-operculum. 



,9. Inter-operculum. 



/). Pre-operculmn. 



i. Temporal, or epi-tympanic. 



/■- Tympanal, or pre-tympanic. 



I. Sympletic, or meso-tympanic. 



711. .lug-al, or hypo-tympanic. 



■It. Posterior frontal, or post-fron- 

 tal. 



n '. Anteriorfronlaljor pre-frontal. 



o. Great ala, or ali-sphenoid. 

 2^. 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. 



u\ Inter-maxillary, or pre-maxil- 

 lar}'. 



X. Articular portion, and 



y. Dental portion of the lower jaw, 

 or inferior maxillary bone. 



