MAC CURDY HUMAN SKULLS FROM GAZELLE PENINSULA. 9 



prominent and, in every instance, is formed by the facies 

 nasalis of the right and left os palatinum. The sutura inci- 

 sivum is fairly distinct in No. 11612, an adult male. 



There is not a single example of os zygomaticum duplex 

 (os Japonicum) in the series. The direction of the malo- 

 temporal suture is rather steep, and the suture is short in all 

 but three of the males (11611-22, 16911). The same may be 

 said of the female crania, with two exceptions (11623, 18283). 



Wormian bones are rare and generally insignificant in 

 size. They occur in only eleven crania, five male, three female, 

 and three children. In addition, there is the suggestion of an 

 os Incae in Nos. 11621 and 16914. In the former, the sutures 

 branch off from the lambdoid suture very near the asterion 

 to disappear after a course of some fifteen mm.; in the latter, 

 the same condition obtains, except that the sutures branch 

 off directly from the asterion. In No. 18282, a child of ten 

 years, there is an epactal bone. The sutures are simple, gen- 

 erally falling between i and 3 of Broca's scale. 



Krause found the interparietal bone in fifteen out of the 

 150 crania described by him; in six of these the interparietal 

 might be classed as a true Inca bone. 



THE TEETH 



The teeth that remain are remarkably well preserved, and 

 in only five crania do any of the alveoles manifest a patho- 

 logical condition. The wisdom tooth is never lacking. There 

 are two examples of supernumerary teeth, as follows: one on 

 the lingual side of the lower right canine in 11621 (male), and 

 one on the lingual side of second lower left premolar in 1 1609 

 (female). 



Almost without exception, the upper molars of both the 

 males and females have three roots, and these are generally 

 spreading. The first molar is the largest except in three 

 crania where all three are of about equal size. In three 



