590 
Proceedings of the Royal Society of Edinburgh. [Sess. 
104, 131, and 175).” Three of the numbers quoted by Krause refer to 
skulls in the South Australian Museum. I have examined the skulls, and 
by permission of the Director, Professor E. C. Stirling, F.R.S., I am able 
to describe and illustrate the conditions occurring in them and in some other 
skulls not referred to by Krause. 
The first (Krause’s list, No. 104) has a small irregular bone at the 
posterior end of the sagittal suture. This is the sort of bone usually 
described as the inca bone or interparietal. Numerous Wormian bones are 
present in the outer half of each limb of the lambdoid suture, and in each 
temporal region there is an epipteric bone. 
Fig. 2. 
The second (Krause’s list, No. 131) has a small bone very much resem- 
bling the first in size and position. In the inner half of the right limb of 
the lambdoid suture there is a larger Wormian bone, and in a corresponding 
position on the left side there is a smaller one. 
The third (Krause’s list, No. 175) shows a remarkable condition of the 
lambdoid suture as regards Wormian bones, viz., two series of bones, one in 
«ach limb of the lambdoid suture, irregularly oblong, lanceolate, or linear, 
the long axis of each bone being sagittal in direction (fig. 2). A small 
Wormian bone is placed almost on the vertex in the sagittal suture, and 
there are two in the right limb of the fronto-parietal suture. 
Among the skulls of other races than Australian aboriginals in the 
