The subject who presented this anomaly of development of the scalp was M. B., aged 66, a peasant woman from the province of Comasca. Of medium height, regular conformation of body, dark complexion, irides dark chestnut, thick and black eyebrows, hair thick, strong, black, with only a few white ones, notwithstanding her advanced age. Her mother, a brother, and a sister have been insane. She suffered some years ago from puerperal mania, and was finally admitted to the asylum at Como labouring under simple lypemania, on 25th March, 1884. She died suddenly from syncope on the 27th of the same month. The autopsy revealed advanced fatty degeneration of the heart and liver.