167 
Part II. — Coast Folk of Trang 
N.A. 
(A) Orang Laut Kappir, Coast of Trang (Plate XVIII., Figs. 4, 5, 6 ; 
Specimens 11-18) 
The eight skulls representing this tribe were found exposed, together 
with a number of others too fragile and injured for removal, in the second of 
the two cemeteries described ( antea pp. 63, 64). Owing partly to the action 
of the weather and partly to the growth of a microscopic green alga, which 
has eaten into the bone wherever it was not covered by the sand, the skulls 
are in a very imperfect condition, the lower jaw having disappeared in the 
majority of the specimens, while the facial region and the floor of the cranium 
have been much injured in several. It happens in some instances, that the 
exact point of measurement has been slightly worn or broken, and .in such 
cases I have measured from the nearest point remaining, and have added 
+ a to the figure recorded, to show that it is rather smaller than it would have 
been in the perfect skull. 
Skulls. I regard four of the skulls as being those of males and four as 
those of females ; but the sexual characters are feebly marked in the majority 
of the specimens, and the sex of Nos. 17 and 18 is perhaps a little doubtful ; 
the condition of the sutures shows that all the individuals represented in my 
series have been adults. 
Norma verticalis. The outline of the skulls is ovoid, being considerably 
narrower in the frontal than in the parietal region, but fairly symmetrical 
in all the specimens. The parietal eminences are distinct, but not very 
prominent. Out of the eight skulls six are mesaticephalic, while two just fall 
within the delichocephalic category ; the mean cephalic index is 77 O and 
the extremes are 74*9 and 78”8. The vault of the cranium is fairly rounded, but 
shows a slight tendency, more marked in Nos. 16 and 17 than in the rest, to 
be roof-shaped. There is not a definite sagittal ridge in any specimen. In 
No. 16 the frontal longitudinal arc is equal to the parietal, but in the other 
