234 
A First Study of the Burmese Skull 
a table which suggests that this feature tends to be finer in the female than in the 
male; also that it is on the whole coarser among the Burmans proper than in our 
B and C groups. 
As regards the "double edge" above referred to, we have noted seven cases of 
this among the S Burmans, only one in the corresponding ?, and one in each of 
the B groups. 
Asymmetry. In going through the series I noted all cases of asymmetry, both 
occipital and frontal; also the existence of a Sylvian depression, and whether 
greater on one side or the other; also the relative sizes of the jugular foramina. 
As, however, these observations have been used to estimate the degree of associa- 
tion between different forms of asymmetry they have been omitted from the 
printed "Remarks." 
Interparietal bones*. The tripartite interparietal in its complete form of os pen- 
tagonale and R and L os triangulare* occurred in one case only (?) in my series, 
and was associated with marked bathrocephaly. There were three cases (1 cj, 2 ?) 
in which one os triangulare was found, each time on the R side. In one of the females 
it was accompanied by considerable asymmetry of the occipital region, the greater 
prominence being on the same side as the interparietal bone. In the other two 
cases, there was a fairly prominent occipital region, but no marked asymmetry. 
Ossicles in the sutures. Where these exist they have been noted, and included in 
the "Remarks." 
Conformation at the pterion. All cases of epipteric bones have been mentioned; 
also instances of the thrusting of a process of the squama temporalis between the 
parietal and sphenoid bones to join the frontal. 
Fourteen of our 61 skulls, and 21 of our 75 ? gave evidence of such pecu- 
liarities, 5 c? and 8 ? having them both R and L. There was an epipteric on the 
K in 11 cj, 11 ? skulls; on the L in 6 c?, 9 ?; frontal process to temporal bone on 
the R in 6 ?, on the L in 2 c?, 3 ?. 
Malar hones. There are in our series five cases of a horizontal suture right across 
the malar bone (out of 127 skulls where face-bones exist) separating off what is 
frequently termed the os japonicum, two of these existing in the same skull. 
In several other cases part of the suture is indicated, but it is incomplete. 
Any specially heavy malar marginal processes have been remarked upon. 
Pre-condyles. The existence of one or a pair of these has been recorded in the 
case of nine skulls. They represent all stages from a single small bony growth on 
the R or L between the condyles, in front of the foramen magnum, to a pair of 
well-developed separate characters and from that to a pair of pre-condyles partly 
fused and forming a small bridge, and, lastly, to a pair entirely fused and forming 
a conspicuous central eminence. 
Metopism. There are two cases of metopism in our 142 skulls. 
* See Biomelrika, Vol. ill. p. 220. 
