A. Affecting the Skull.
Cerebrogenous.
(a) Direct Cerebrogenous.
1. Frontal submicrocephaly (expressed in the relative and absolute smallness of the brain, especially in the transverse diameter). Criminals, 41 per cent.
2. Narrowing of the cranio-facial angle at the base of the skull, leading to prognathism.
Occurrence: In all primates, in negroes, Papuans, Australian blacks, etc. Criminals, 60 per cent.
3. Receding forehead.
Occurrence: According to Lombroso, in 19·4 per cent. of 4,244 criminals. According to Kurella, in criminals from Upper Silesia, 11 per cent.; in workmen from Upper Silesia, 4 per cent.
4. Often associated with 2 or 3. Middle occipital fossa.
Occurrence: In all apes, in the anthropoids, including the gibbon.