332 
A Study of the Negro Skull 
series (see Fig. (iii), p. 329). Cases of the parieto-squamosal suture being straight 
and almost horizontal were noted in three Congo males (19, 21, 39). 
Frontal processes of the squamous, generally bilateral, were very frequent. 
They occurred in nine females (10, 12, 60, 70, 75, 78, 82, 86, 88) and seven males 
(18, 40, 53, 7 L, 77, 89, (?)) of the Gaboon 1864 series, in two males (5, 32) and two 
females (19, 37) of the 1880 series; and in two females (66, 73) and three males 
(32, 50, 57) of the Congo series. Temporal processes of the squamous occurred in 
one Congo male (90). The pterion* was in ' K' in three males (8, 31, 73) of the 
Gaboon 1864 series, in two males (3, 31) and one female (33) of the Gaboon 1880 
series ; and in one female (83) and one male (45) of the Congo series. There was 
a marked sutura notha in one male (79) of the Gaboon 1864 series, and a fronto- 
squamosal suture occurred in two males (69, 89) of the same series. 
(iii) Interparietals. A tripartite interparietal, similar to that figured Bio- 
metrika, Vol. III. Plate XXXVII, occurred in a male (58) of the Gaboon 1864 
series. A large simple interparietal occurred also in a female (8) of the Gaboon 
1880 series, and another simple interparietal in a male (28) of the Congo series. 
Epiterics occur in two females (54, 91) and three males (7, 36, 50) of the 
Gaboon 1864 and in one male (14) and one female (10) of the 1880 series. In the 
Congo series they are recorded in seven males (16, 34, 38, 40, 43, 47, 52), four 
females (66, 69, 70, 74) and one non-adult (14). 
(iv) Ossicles. Ossicles of the lambda occur in two females (10, 70) and five 
males (7, 25, 30, 61, (?)) of the Gaboon 1864 series; and in two females (70, 88 
(paired), see Fig. (ii), p. 328) and three males (27, 41, 48) of the Congo series. 
Ossicles of the lambdoid suture are recorded in ten males (3, 8, 14, 15, 25, 34, 47, 50, 
57, 61) and seven females (16, 20, 22, 56, 60, 70, 74) of the Gaboon 1864 series ; in 
six males (4, 5, 14, 22, 23, 27) and two females (10, 39) of the Gaboon 1880 series ; 
and in two females (83, 91), thirteen males (16, 17, 20, 21, 22, 23, 25, 27, 28, 34, 
38, 47, 56) and one non-adult (14) of the Congo series. Thus ossicles of the 
lambdoid suture are recorded in 25°/ 0 of male and 12°/ 0 of female crania. Macdonell 
found no such sexual difference in his English series, recording them for about 
9°/ 0 in female and 11 °/ 0 in male crania. 
Posterior sagittal ossicles were recorded in one female (16) of the Gaboon 1864 
series, in one female (4) of the Gaboon 1880 series, and in one male (34) and one 
female (82, see Fig. (i), p. 327) of the Congo series. 
Ossicles in the masto-occipital suture occurred in four females (10, 29, 56, 82) 
and in one male (53) of the Gaboon 1864 series ; they occurred in one female (83), 
two males (22, 23) and one non-adult (14) of the Congo series. 
Ossicles in the masto -parietal suture occurred in two females (70, 82) of the 
Gaboon 1864 series. Ossicles in the parieto-squamosal suture in one female (10) 
* Flattening of the pterion was only recorded in two crania (30, 31) of the Gaboon 1880 series, both 
males. 
