172 CHARLES R. STOCKAED AND A. L. JOHNSON 



skull parts in these specimens were plotted for comparison 

 with the palate lengths. 



Text-figure 21 represents the shortest anteroposterior dis- 

 tance from the infraorbital foramen to a vertical line passing 

 the anterior incisal alveolus (pi. 35, fig. 3, J-F). A curve 

 along the top of this chart is closely similar to that for 

 palatal lengths; only a few mild irregularities occur. The 

 range of measurements from the infraorbital foramen to the 



7o 

 6o 



So. 



Jo- 

 /o- 



Text-figure 21. Sequence F. Infraorbital foramen to incisal alveolus. Same 

 skull sequence as text-figure 20. 



line of the incisal alveolus is from 75 mm down to only 14 mm. 

 The longest is 5.4 times greater than the shortest. Both the 

 above groups of measurements involve features in the skulls 

 that differ widely in length but are nevertheless closely related. 

 The distances from the sagittal point of union between 

 the frontal and nasal bones to the anterior end of the inter- 

 nasal suture (pi. 35, fig. 1, 1-J) gave a third series of measure- 

 ments for these skulls. These measurements (text-fig. 22) 



