OCCIPITAL FORAMEN. 



25 



HORIZONTAL ARC. No. 2. 



The horizontal arc over the ophryon, Table XXI, shows a variation in the male between 

 490-546 mm., with the majority between 490 mm. and 520 mm. In the female, the variation 

 lies between 458-523 mm., the majority being between 480 mm. and 500 mm. 



TABLE XXI. 

 Horizontal Arc over the Ophryon. 



OCCIPITAL FORAMEN. 



The length of the occipital foramen varies, in the male, from 32-42 mm., the average 

 being 36 mm. ; in the female, from 32-40 mm., average 36.25 mm. The breadth varies, in 

 the male, from 22-35 "i"^- ; '" the female, from 22-33 i''™''- ! the averages being 

 30.72 mm. and 30.76 mm. respectively. ' 



OCCIPITAL FORAMEN. 

 56 NEW ENGLAND INDIANS. 



6 



6 



4 

 3 

 2 



/ 



7/ 72 73 74 76 76 77 76 79 SO 6/ S? (35 64- 6536 37 83 69 90 9/ 9S 93 94 96 96 ihd/cec . 



Fig. 19 



From the curve in figure 19, it will be seen that the majority of the indices indicate an 

 elliptical shape but not a very narrow one, for they more nearly approach 100 than 50 and 

 the former indicates the index for a circle. 



If it is fair to judge from so few specimens, the females have a larger number which 

 more nearly approach the circle than the males. 

 Memoirs Conn. Acad., Vol. IV. 4 



