738 THE AMERICAN NATURALIST. [VoL. XXXIV, 
NUMBER. PERCENTAGE. 
Eskimos., ©... 52 o 
New England . 68 2.9 
Ohio and Tennessee 681 8 
California . . 160 I.9 
Miscellaneous ! 260 [e] 
North America 1127 I.I 
Peru? 458 LI 
Total 8 1585 I.I 
NUMBER. PERCENTAGE. 
a uaaa gg xy 565 dus (Anutchin) * 
A&mennds 7. 8 5... s. 426 1,2 A 
E 416 3 (Harrison Allen) 5 
external auditory meatus. The tendency is increased in de- 
formed crania, though it is now believed that such exostoses 
are not a necessary accompaniment of deformation ; in support 
of this it will be noted that the small series of crania from 
New Mexico with pronounced occipital deformation exhibit not 
a single case of tympanic exostosis. I was somewhat surprised 
to find this condition of more frequent occurrence in the 
skulls from Ohio and Tennessee (Fig. 2) than in the deformed 
crania from Peru (Fig. 3). The exostoses varied in size from 
minute nodules to large tumorous growths and, in several 
1 Including small collections from the Northwest, New York, New Jersey, 
New Mexico, and the territory occupied by the plains tribes. In subsequent 
tables the term “ miscellaneous ” will be applied to the last two groups. 
? The localities from which the Peruvian crania in the Peabody Museum have 
come are Ancon, Casma, Grand Chimu, Amacavilca 
? Compare the results Eie: by Anutchin and ‘Topinard in their investiga- 
tions upon European cr 
Europeans of both sexes — to. xen skulls 8.7 per € — eme in). 
Catacombs of Paris « .9I per cen Topinard in his 
Éléments Pait ibas, P: 793): 
4 Anutchin, D. N. Reviewed m M. C. Merejowsky in Rev. d’Anth., T. vi, 
Sér. 2, p. 
5 Allen, Mti. Crania from the Mounds of the St. John's River. Jour”. 
Acad. Nat. Sci., Philadelphia, New Series, vol. x, No. 4- 
