THE SESAMOID ARTICULAR 



Micropterus salmoides, Labrax lupus, Serranus atrarius, Roccus 

 lineatus, Cynoscion maculatus. 



In these the sesamoid articular is as in Lobotes et. al., but more 

 anterior in position and not in contact with the endosteal process. 



S4 epr 



Fig. 12. LABRAX LUPUS 



an, angular; ecpl, ectosteal plate; epr, endosteal process; me, Meckel's cartilage; 

 sa, sesamoid articular ; t, tendon. 



Orthopristis chrysopterus. 



In this the sesamoid articular is very large. It is closely attached 

 to the ectosteal plate, with about a sixth of its length resting on the endo- 

 steal process and the rest on Meckel's cartilage. It is long and tapers 

 to a point anteriorly, while on the top of its posterior part is a very large 

 tubercle of bone for the attachment of the adductor tendon. 



THE PHARYNGOGNATHI. 

 Tautoga onitis, Crenilabrus pavo. 



The sesamoid articular is on top of Meckel's cartilage, attached 

 against the ectosteal plate and slightly attached to the endosteal process. 



Harpe rufa. 



There are two adductor tendons originating on the same muscle 

 that are similar in size and structure as in Leiognathus, but only the 

 upper one joins the sesamoid articular. The other is attached to the 

 articular ventral to the endosteal process. When stripped of their muscle 



