702 



THE AMERICAN NATURALIST [VouXLVHI 



which causes a slight curvature in the sagittal suture. It is in the 

 region of the lachrymals (1) that the distortion is most marked, 

 so that the lachrymal on the convex side of the bend, especially 



g 



in the left skull, is much longer than that on the opposite side; 

 the same is true of the malars (m), of the maxillaries (mx), and, 

 to a less degree, of the premaxillae (pm) . The nasals (n) are also 

 unsynmietrieal, but do not differ much in size; they are simply, 

 as a pair, pushed to the side. 



Fig. 2. The ventral aspect of the skull shows even greater ab- 

 normalities than the dorsal. The occipital (o), as noted above, 

 was somewhat injured by the person who disarticulated the skulls 

 from the neck, but it is quite unsymmetrical, especially in its 

 exoccipital region. In the left skull (right in this figure) all the 

 other bones seen in this aspect are bent, but in the other skull 

 most of the bones arc comparatively straight. 



In the right skull a suture in front of the teeth separates off an 

 extra bone (e) on each side, between the maxilla and the pre- 

 maxilla. that of the r'uzht side lieinir imieh the larger. In the left 

 skull these extra bones are not present though a partial suture, 



