392 KANSAS UNIVERSITY SCIENCE BULLETIN. 



tained portions of two molars, and unfortunately the contact 

 between the piece of jaw and skull is broken away. 



By referring to plate XXXIX, figures 1 and 2, the observer 

 will see that the skull is of a decidedly hyperbrachycephalic 

 type, being nearly as broad as long. The whole of the frontal 

 region is very low and flat. The frontal eminence is made to 

 appear more prominent by the presence of a slight, almost flat, 

 depression, which occurs between the superciliary ridge and the 

 frontal eminence. The temporal ridge is sharp and rather 

 prominent, and as it extends backwards appears to take more 

 of an upward trend, rather than a downward curve as is usual 

 when it reaches the region of the parietal, thereby giving the 

 frontal bone a more angular appearance. 



By referring to plate XXXIX, figure 2, it will be seen that 

 the parietal protuberances are very pronounced. The temporal 

 fossa are deeper than is usual. 



From the front the malars appear square, much resembling 

 those of the Esquimaux. The superciliary ridga is very high. 

 The superior border of the orbital arches is straight, and 

 shows very little rounding to form the orbital apertures, but 

 turns at a very sharp angle at both ends, making the upper 

 portion of the orifice almost square. The glenoid fossa is 

 rather shallow, but very broad. The following measurements 

 have been made : 



Antero-posterior diameter, 15.7 mm.. 



Transverse diameter, 15 mm. 



Top of cranium to auditory fossa, 12.3 mm. 



Cephalic index, 95.54 mm. 



Nowhere does the skull show any deformation by artificial 

 means. 



By way of comparison with the specimen just described, it 

 has been thought advisable to giVe a reproduction of another 

 very fine skull and lower jaw^s, also found by the writer in the 

 Argentine Republic, at the port of San Bias, in the Rio Negro 

 territory, about 600 miles south of Buenos Ayres. This speci- 

 men shows a very marked difference from the one previously 

 described, and, judged not only by its proportions and shape 

 but by the excellent examples of pottery and arrow-heads 

 found associated with it, must have been of a race far more ad- 

 vanced than the Killik Aike specimen from Patagonia. 



The skull shown on plate XXXVIII, figure 1, although hav- 

 ing a rather low, slightly receding forehead, taken alto- 



