WHOI-E VOL. SKELETAL REMAINS OF EARLY MAN HRDLICKA 2iy 



of the digastrics. The outline of the lower border, as in jaw H, is 

 very distinctly cupid's-bow shaped, owing to its arching and a marked 

 lower symphyseal protuberance. 



The lingual surface, anteriorly, shows similar conditions as the 

 other lower Krapina jaws. The mylohyoid ridge is very strong, and 

 bifurcates as in the other Krapina jaws where it may be observed, 

 one branch leading upwards, along the coronoid process, the other 

 backwards to the mandibular foramen and the base of the condyle. 

 In front of the vertical ridge is a large marked fossa, below the 

 bifurcation is a spacious pronounced hollow for the internal pterygoid 

 muscle. The mandibular foramina are situated high, as also in the 

 other Krapina specimens, and are large. The mental foramina (single 

 on the right, double on left), are located below the rear part of Ms i. 

 The dental arch is nearly U-shaped, with the branches moderately di- 

 verging. There are stiu'present 13 teeth. The teeth are large, mega- 

 don't, and this effect is further increased by the tartar concretions. 

 The M 3 is smaller than M 2. There is a relatively wide s])ace between 

 the last molars and the anterior coronoid border. 



In all these characters, except in the coronoid prolongation of the 

 mylohyoid ridge, the jaws dififer more or less from modern ones, 

 but approach closely those of La Chapelle and other early mandibulae. 



The condyles (altered through arthritis) measured r. 29.5, 1. 

 28.8 mm. transversely; and r. 16.5, 1. 15 mm. antero-posteriorly. 



Additional Measurements : '^"i- 



Height at symphysis 4-23 



Height at M2 3-22 



Thickness at symphysis ^-5 



Thickness at M2 



Breadth of the ramus, min 3-7 



Bicondylar diam ^4-8 (cast) 



Bigonial diam. approx ^'-^ ^^^^^> 



Lozver jazv No. 16.— This is not described in Gorjanovic-Kram- 

 berger's Memoir. The specimen consists of the right ramus with a 

 portion of the right body enclosing a damaged third molar. Evidently 

 part of the jaw of an adult female. 



At first sight the specimen looks much like a portion of a modern 

 lower jaw. The ascending ramus is 6.9 cm. high (from the mid-point 

 connecting the uppermost parts of the condyle and the coronoid proc- 

 ess to a point on the inferior border of the bone corresponding to 

 the mid-line of the ramus) by 3.6 cm. broad. The mandibular angle is 

 approximately 118°. The height of the ramus at the third molar is 



