For the purpose of analysing the relation between form of neck and those of bust and shoulder, principal component analysis was applied to the data (same as part 1) of three groups of 700 males aged 20-59 years, classified by “anterior chest width/shoulder width” index (group XN, x ±1σ; group XS, less than ( x -1σ); group XL, more than ( x +1σ). The results obtained by Varimax Rotation are as follows : 1) The first principal component of these three groups was interpreted as volume factor of body, and the third one represents a relationship between bust form and neck form. 2) The interpretation of second principal component was different in each group; it was the age that took effect on neck form in groups XN and XS, whereas, in group XL, it was the relationship between chest girth and neck base girth. 3) For the principal components of the first through fifth, the items which present high cumulative contribution ratio were different in each group. They are : in group XN : chest girth, in group XS : chest girth and neck base girth, in group XL : neck base girth, shoulder width, posterior chest width and posterior neck base girth. These items have to be took in consideration on the occasion of pattern planning which we perform in each somatotypological group.