194 



Charles Searinc; Mead. 



ala temporalis and ala orbitalis are respectively the honiologs of the 

 ala magna and the ala parva in human anatomy. The latter names 

 are often unsuitable when applied to the other mammals, since the 

 size relation of the alae is so frequently reversed, as is the case in 

 Sus. 





Fig. 6. Section just behind the nasal capsules, showing the interorbital 

 septum s. int. x 1^. 



a.orJ)., ala orbitalis ; ant.rad., anterior radix of the ala orbitalis ; M.c, 

 Meckel's cartilage; dent., deutary bone; //•.. frontal; vo.. vomer. 



The posterior wing or ala temporalis is divided into two parts, 

 the proximal processus alaris and the more laterally situated as- 

 cending part or ala temporalis proper. The processus alaris (Fig. 7, 

 pr. al.) extends directly outward from the basal cartilage opposite the 

 anterior end of the sella turcica and serves to connect the ala tem- 

 poralis with the base of the skull. In shape it is like a short tri- 

 angular rod. The ascending part of the ala temporalis resembles 



