202 



Charles Searing Mead. 



the reptiles, as Gaupp has suggested (1905 b). On the side of 

 the nasal capsule, above and posterior, to this process, is a large 

 shallow pit hollowed out for the large eyes (PI. III). 



The paries nasi, in the narrower sense, includes., in the mammals, 

 only that portion of the side wall of the nasal capsule which is 

 anterior to the processus maxillaris posterior, since in the reptiles the 

 portion back of this process forms the planum antorbitale. The 



Fig. 10. Diagram to show the location in the head of the sections from 

 which the various text figures were talien. The numerals refer to the corres- 

 ponding figures. 



posterior third of the paries nasi is swollen on account of the large 

 size of the recessus lateralis (see below). The anterior two-thirds 

 is much flattened and where it joins the posterior third there is a 

 large shallow pit. At the upper portion of this pit there is, on each 

 side, a small foramen, the foramen epiplianiale (Gaupp), for a 

 blood-vessel, and the ramus lateralis nasi of the nervus ethmoidalis. 



At the dorso-lateral part of the nasal capsule is the commissura 

 spheno-ethmoidalis, which connects it with the ala orbitalis. In 

 the reptiles a line joining the corresponding place with the processus 



