E. C. CASE 



epicoracoid in profile, showing the true length and the curvature. 



The coracoid remains free from the scapula through life, but the 



suture between the scapula and epicoracoid is closed near the 



^\j^ outer edges of the bones. The posterior 



(upper) edge of the cotyloid cavity is 

 formed by a very strong ridge or process 

 of bone which extends out somewhat, upon 

 the epicoracoid. At the base of this ridge 

 the epicoracoid is perforated by a large 

 foramen, and just posterior to the ridge the 

 shaft of the scapula is penetrated obliquely 

 from behind forward by a somewhat smaller 

 foramen. The epicoracoid is very thin, and 

 the greater portion of the scapula is also 

 thin and expanded, but the region near the 

 cotyloid cavity is thicker and very strong, 



MEASUREMENTS OF THE SHOULDER GIRDLE. 



Length of the scapula - - 0.330-40™ 

 Width across the scapula and epico- 

 racoid opposite the cotyloid cavity 0.120 



The clavicle lies in nearly the natural 

 position on the scapula and epicoracoids. 

 It is a peculiarly shaped bone, with the inner 

 ends much expanded and very thin, and the 

 inner edge almost straight. The distal ends 

 are very slender and rod-like and contract 

 to a point which is marked with strong 

 striations. Near the middle of the posterior 

 Fig. 4.— Side view of g^gg is a rugose process for ligamentous 



the scapula and epicora- , , , . -r^- ^ .^ 1 • 1 r 



., ,/ . , . attachment, rig. ^ shows the clavicle of 



cold. j^3 natural size. J 



the right side. 

 The interclavicle is less well preserved than the other bones 

 of the shoulder girdle, but the size and form are easily made 

 out. There is a long and slender median process which pro- 

 jected posteriorly and is well preserved; the anterior end was 

 thinner and much expanded ; the edges are broken, but by 



