38 
THE VOYAGE OF H.M.S. CHALLENGER. 
measurements recorded by more than one observer.^ The lowest brim index was 72, 
measured by Spengel, and the highest a male described by John Wood, with an index 
of 105, whilst the mean of the series was 92"7. In the male Negro, therefore, there 
was a greater difference as a rule between the transverse and conjugate diameters than in 
the Australians, Bush race, and Kaffirs, and the transverse diameter was proportionally 
wider. The males were mesatipellic, and the females were in the higher term of the 
platypellic division. The brim, therefore, as a rule, was not cuneiform, but had a more 
rounded outline. 
The most extensive series of measurements of the pelvis of the Andaman Islanders 
has been given by Professor Flower in his memoir on their Osteology and in his 
Additional Observations thereon. His measurements of the pelvic brim gave a mean 
index in thirteen females of 96'4 and in twelve males of 98*8. Dr. Garson's measure- 
ments of apparently the same thirteen female pelves furnish the same mean index, 
9 6 '4. These numbers are higher than I got in my much more limited series, Table 
IV., where the three adult females had a mean brim index of 87 and the single adult 
male an index of 97. Notwithstanding these differences, it is, however, quite clear 
that, as the brim index was about 98 in the males, the pelvis in this sex was distinctly 
in the dolichopellic division. In the females, again, the index was lower, and, if the 
mean of Flower's and my observations be taken, it was 9 1 "7, which places their pelvis 
in the mesatipellic (mesatilekanic) group. 
In the Dresden Museum is the skeleton of a female Negrito from Palauan, Luzon, 
measured by Meyer and Tiingel, in which the pelvic brim has a transverse diameter 112 
mm. and a conjugate 100 mm., the index being 89 ; in the same museum another Negrito 
female skeleton, from Bontoc, Luzon, called an Igorrote, has a transverse diameter of the 
brim of 122 mm., and a conjugate of 97 mm., the index being 79*5. M. Hamy, in his 
description of the skeleton of a female Negrito of the tribe of Aeta, from the neighbour- 
hood of Binangonan, Luzon,^ found the transverse diameter to be 112 mm., the conjugate 
88 mm., and the brim index was only 78*5. In each of these three female Negritos the 
brim index was below 90, and the pelvis was platypellic. Von Fran que described a 
female pelvis from Luzon, in the Semper collection in Wurzburg, as that of a Papuan, 
but from the place where it was obtained it may have been a Negrito. Hennig, who 
has recently measured it, gives ^ the transverse diameter 115 mm., conjugate 105 mm., 
the brim index being 91, i.e., it was mesatipellic. Another female pelvis often said to 
be that of a Negrito, in the museum at Halle, has been described both by H. Fritsch 
(Nonnulla de pelvibus), and by Hennig ; * and the latter states that the transverse 
1 Professor Humphry in his treatise on the Human Skeleton (p. 106) states that the mean transverse diameter of 
twenty-five Negro pelves is 4-6 inches, the mean antero-posterior 4-1 inches ; the calculated index therefore is 89. 
The sex of these skeletons is not stated, but probably both male and female. 
2 Archives du Museum, ser. 2, t. ii., 1879. * Sitzungsh. der Naturf. Ges. zu Leipzig, May 11, 1880. 
* Op. cit. 
