104 



average index of 712. The male skulls, with an index of 

 700, are not as lofty as the female, which average 72 - 5. The 

 variation in this table is larger, 11 4. Topinard gives an 

 average index of 71*0 for the male, and 6S5 for the female, 

 thus making the male skull the higher in proportion, which 

 is the opposite to what we have found in our specimens. In 

 one specimen in the Cambridge collection the index is 68*4. 

 These figures combined give an average of 69*8 in the male, 

 and 70*5 in the female, or 70 1 in both sexes. The Tas- 

 mauians should therefore be classed as Tapeino-cephalic. 



Orbital Index. 



No. Average. Minimum. Maximum. Class. 



Male 6 79-4 667 919 Microseme 



Female ... 4 84-8 800 889 Mesoseme 



Total 10 81*6 667 91-9 Microseme 



This table gives an average of 81*6 in these crania, classing 

 the skulls as microseme ; the males have a lower and wider 

 orbit (index 79*4) than the females (84'8). The variation is 

 considerable (25'2). The variation of the male skulls 

 (25*2) is much greater than that of the female (8'9). Topinard 

 gives an average index of 766 in the male, and 81 in the 

 female. Flower finds the male index to be 767 and the 

 female 84'9 in 14 skulls which he measured. In the two 

 skulls in the Cambridge collection the average index is 77 3. 

 These figures combined give an average male index of 77*5 ; 

 and female of 83'6 ; the average for both sexes is 80*5. The 

 Tasmanian skull is therefore microseme. 



Nasal Index. 

 No. Average. Minimum. Maximum. Class. 



Male 6 540 49'1 622 Platvrhine 



Female ... 3 55'2 49'0 58*7 



Average ... 9 544 49'0 62-2 



In nine skulls we find the average nasal index to be 54*4. 

 In the male the index (54) is lower than that of the female 

 (55 2). Both sexes therefore belong to the platyrhine group. 

 The variation is 132. Broca, in eight Tasmanians, finds a nasal 

 index of 56 - 92. Flower, in 14 Tasmanians, one of 57*4. In the 

 Cambridge collection the average nasal index of the two 

 skulls is 64*1. This is much higher than any of the other 

 nasal indices ; it is indeed higher than the maximum nasal 

 index in our collection (62 # 4). On working out the nasal 

 index from the measurements of Topinard, quoted in Ling 

 Roth's " Tasmanians," we find it to be 551 in the males, and 

 60-5 in the females. These figures combined give an average 

 nasal index of 58"1, and class the Tasmanians as Platyrhine. 



