366 



F. H. EDGEWORTH 



embryo the suspensorial tubercle has developed on the back 

 of the otic process of the Quadrate and the anterior end of the 

 hyosuspensorial ligament joins it. These structures are shown 



Text-fig. 37. 



Hyosuspens^ 



Cercdbolyccl 



Text-fig. 38. 

 Sl.kyoniarui yii «-^>.1Iij 



(^ic pr. oFquadr. 



/•'■■■ t ; , = 'Ir*-:^' 



AuxL capf 



Irderlyaic 

 Hyosiispen Leg. 



Ccratohyal 



Embryo 26 mm., sagittal section. 



in Text-fig. 39 made from a model of a 27 mm. embryo. The 

 lateral end of the oto-quadrate cartilage turns forwards and 

 joins the Quadrate. The Interhyal is a < -shaped structure, 

 apex forwards, between the lateral edge of the auditory capsule 



