PERCH. 



commenced in the Supplement to the first edition of this 

 work. 



Not to interfere, however, with the ornamental appearance 

 of these crania, as vignettes, by a repetition of letters or 

 numbers in reference to each particular bone, I shall confine 

 the markings to the head of the Perch only, as here intro- 

 duced, premising, that a little useful perseverance will lead 

 to a knowledge of the analogous bones in other crania. 



a. Principal frontal bone 



b. Parietal. 



c. Inter occipital. 



d. Inter parietal. 



e. Operculum. 



f. Suboperculum. 



g. Interoperculum. 

 h. Preoperculum. 

 i. Temporal. 



k. Tympanal. 

 1. Sympletic. 

 m. Jugal. 



y. Dental portion of the lower j 



n. Posterior frontal, 

 n*. Anterior frontal. 

 o. Great ala. 

 p. Sphenoid, 

 q. Internal pterygoid. 

 r. Transverse, 

 s. Palatal bone. 

 t. Vomer. 

 u. Nasal. 



v. Superior maxillary, 

 w. Inter maxillary. 

 x. Articular portion, and 

 aw, or inferior maxillary bone. 



