34 THE SESAMOID ARTICULAR 



Hemilepidotus jordani. 



The sesamoid articular is on top of Meckel's cartilage against the 

 ectosteal plate and remote from the endosteal process. 



THE GOBIES. 

 Dormitator latifrons. 



The sesamoid articular is large and disk-shaped, with its flat side 

 attached firmly to the ectosteal plate, its posterior lower edge to the endo- 

 steal process, and its lower edge extending downwards over Meckel's 

 cartilage to a considerable extent. The tendon is attached near its middle. 



Philypnus dormitator. 



The sesamoid articular is a rather small triangular bone, situated on 

 top of Meckel's cartilage well in front of the endosteal process, and 

 slightly against the ectosteal plate. 



THE DISCOCEPHALI. 

 Echenis naucrates. 



The endosteal process is obscure. The sesamoid articular is a large, 

 flat bone of rather complex outline, attached against the articular just 

 above and slightly covered by Meckel's cartilage. 



THE TRICHODONTID^E. 

 Trichodon trichodon. 



The sesamoid articular lies just in front of the endosteal process 

 between Meckel's cartilage and the ectosteal plate. 



THE LATILID^E. 



Lopholatilus chamoeleonticeps. 



The sesamoid articular is a rather large, thick bone wedged between 

 the ectosteal plate and the endosteal process. 



