288 THE AMERICAN NATURALIST. (VoL. XXXVI. 
The incomplete malar divisions occur in whites, according to 
various authors,” with the following frequency : 
Gruber found the posterior incisure among 4000-5000 mainly Russian skulls in 
28, or 8.5 to 10.7% and among 50 skulls of children and embryos in 7, or 14%. 
Meyer found the incisures among 517 German skulls in 20, or 3.9%; among 
2 Russian skulls in 3, or 
Tarenetzkij found the incisures among 45 French skulls in 2, or 4.4%; among 
416 Russian skulls in 28, or 6.7%. 
Anutschin (source and kind of incisures not stated) in 1.277. 
Matiegha found among 300 Czech skulls the posterior incisures in 22, or 7.3%; in 
anterior incisures in 6, or 2.0% of the cases. 
All the authors who examined various ethnic crania for the 
partial malar divisions (Meyer, Sarasin, Tarenetzkij, Anutschin, 
Koganei, etc.) found them to be more frequent in almost all 
other peoples (Australians excepted, Anutschin) than in the 
whites, 
In the human skulls that I have examined for this condition 
the partial malar divisions were distributed as shown in the 
tables on pages 290 and 29r.?! 
The data given on these pages show plainly : 
I. A considerably greater frequency of partial malar divi- 
sions in the American aborigines than in the whites. This 
excess in the partial is not associated with any corresponding 
excess in the complete divisions. 
2. The divisions among the American aborigines occur 
relatively more frequently in the females than in the males and 
most frequently in children; however, the differences in the 
percentages in these three groups are not excessive. 
3. The posterior divisions greatly preponderate in frequency 
over the anterior ones. 
4. Both the anterior and posterior incisures are much more 
frequently bilateral than unilateral. 
in Pat after Matieghka. 
2 Has unusually low percentages with all the groups examined — apparently 
— — — recordin ng 
