102 A Second Stmhj of the English Shdl 
how the mean maximum head breadth and minimum forehead breadth of these 8 
metopic skulls compare with the means for the whole series. 
TABLE XI. 
Goviparison of Metopic and General Skulls. 
Character 
Male Skull 
Female Skull 
General 
Metopic 
General 
Metopic 
Maximum Head Breadth ... 
Minimum Forehead Breadth 
143-0 
98-5 
144-2 
103-7 
137-6 
95-2 
138-6 
101 -0 
These figures, so far as they go, show that the conclusion drawn from the 
Wliitechapel measurements was well within the mark*, viz., that a persistent 
frontal suture may allow of a 2 to 3 mm. increase in the minimum forehead 
breadth, but probably influences the maximum head breadth only very slightly. 
Traces of a transverse occipital suture passing between the upper and lower 
inial eminences occurred in one female skull ; also vestiges of this suture, on both 
sides, in one male skull. A distinct masto-squamosal suture was noticed in a female 
skull, and in another female an infraorhital suture on the face. 
A fronto-sq uamosal articulation, by means of a more or less developed frontal 
process of the squamous temporal, was met with in G skulls, 2 male (bilateral) and 
4 female (2 bilateral, 1 right, 1 left). 
(iii) Interparietals. 
On close examination it has turned out that interparietals are very rare in this 
series. In addition to the two instances of vestigial transverse occipital suture 
mentioned above, there is only one case of a tripartite interparietal, in which the 
05 pentagonale is fused with the supraoccipital, while the ossa. triangularia, right 
and left, are distinct. (See Plate VI.) 
(iv) Ossicles and Wormian Bones. 
Ossicles of the bregma were noted in 3 cases (2 male and 1 female) ; of the 
lambda in 8 (4 male and 4 female) ; of the asterion in 2 female skulls, and of the 
pterion in 9 cases (3 male and 6 female). There were 4 cases, all female, of 
ossicles, usually triangular, in the jxirietal notch of right and left temporal. 
Ossicles or Wormian bones were recorded in sutures as follows : 21 cases in the 
lambdoid (11 male and 10 female); 2 in the j)arieto- mastoid, both female; and 1, a 
female, in the occipito-mastoid. In all, 36 skulls (17 male and 19 female), or 
30 per cent., had anomalous ossicles in one or more of the regions indicated. 
* Biometrika, Vol. iii. p. 220. 
