68 BULLETIN OF THE ESSEX INSTITUTE. 



the maximum diameter to be less than that of the length 

 is the rule in males, but the index 95 is rather low, even 

 for Australians, as 99 is usually given as the average index 

 and 94, according to Turner, is that of the Andamanese. 

 The average sacral index in the European male is about 

 112, while that of the anthropoid apes is as high as 87 

 in the orang. Thus here we have evidence of a low type 

 of skeleton. 



LIMBS. 



The length of the limbs has already been given. The 

 diameter of the head of the femur is 43 mm. which is con- 

 siderably less than what we should expect. The neck of 

 the femur is very short, measuring only 21 mm. on the 

 dorsal side. The right tibia is peculiar in that there is a 

 high ridge or crest which surmounts the spinous process 

 of the head and rises to a height of 3 mm. above the lat- 

 eral tubercles. The fibula is curiously shaped and can 

 be described with great difficulty. Its posterior border 

 is very sharp and this sharp edge extends to the centre of 

 the bone. The inner and especially the outer surfaces are 

 highly concave ; in a cross section of the upper extremity 

 it would present an inverted T shape, while toward the 

 centre it is more nearly live-sided, the three larger sur- 

 faces being decidedly concave. The humerus is not per- 

 forated. The head measures but 39 mm. in diameter. 



LIST OF BOOKS AND PAPERS CITED OR CONSULTED IN THE 

 PREPARATION OF THIS PAPER. 



1. Cooper, C. Dudley. 



Notes ou the Skull of an aborigiual Australian. 

 J. A. I. V. xxiii, pp. 153-156. 



