740 The American Naturalist. [August, 
c. Axillary Border and Inferior Angle——The variation here equals or 
even exceeds that of the superior border. This, as is well known, is 
due very largely to the variations in the attachment surface for the 
teres major muscle. As Professor Dwight here pointed out, this sur- 
face is prolonged after the nature of a spinous process in many of the 
lower monkeys, and has been considered by him as “ the appearance of 
a peculiarity of lower forms ”—analogous to the third trochanter. This 
opinion is, I believe, not generally held by anatomists, the majority pre- 
ferring to regard the process, when present, as due solely to the influence 
of an unusually well developed teres major muscle. There being thus 
an unusual amount of interest in this region I have reproduced the out- 
lines (see Figs. 3 and 4) of all the Kwakiutl and Songish scapule, 
keeping the two sexes distinct. 
a. 
Fic, 3.—Inferior Angle of Scapule of Kwakiutl Indians. (One-half natural 
size.)—a. Males. b. Females. 
