364 MAMMALIAN ANATOMY 



The zygomatic border is sharp and slightly emarginate. It is 

 continued backward as the lower margin of the zygomatic process. 



The postorbital process is stout and triangular ; it curves inward 

 and its apex is directed upward and backward. Its anterior border is 

 continuous with the orbital border of the bone. Its posterior border 

 meets the upper or temporal border of the zygomatic process at a right 

 angle, but is usually separated from it by a marginal spine at the 

 upper edge of a notch which is more or less deep. The outer surface 

 (Fig. 283) is smooth or subcutaneous. On it, near the base of the 

 process, is a more or less constant foramen, sometimes called the malar 

 canal. The inner surface (Fig. 284) is divided into orbital and 



FIG. 284. 



Postorbital Process.- 



Nutrient Foramen.-^ JiMi Hk Orbital Surface. 



With Zygomatic Process of Temporal. - 

 Zygomatic Process. 



With Lachrymal. 



With Maxillary. 

 LEFT MALAR, INNER SURFACE. 



temporal surfaces by a prominent orbital crest which passes from the 

 apex obliquely down to the rough surface for the maxillary near the 

 anterior-inferior angle. The apex is sometimes truncated and con- 

 nected with the postorbital process of the frontal. 



The zygomatic process is a curved prolongation of the posterior- 

 inferior angle. Its outer surface is smooth, and the inner surface 

 (Fig. 284) is roughened along its upper half for the attachment of 

 the zygomatic process of the temporal. 



The maxillary process (Fig. 283) is a hook-like extension of the 

 anterior-superior angle. Its apex articulates with the lachrymal bone. 



The inner surface of the malar (Fig. 284) is largely occupied by 

 the smooth orbital surface, which begins in front on the inner side of 

 the maxillary process as a narrow strip, then widens so as almost to 

 reach the zygomatic border, and then narrows again and forms the 

 orbital surface of the postorbital process. It is concave from before 



