Anderson and Novy1 recently recorded 4 cases of a peculiar congenital defect of the scalp, thus publishing the second article on this subject in the American literature. As these authors consider that this defect is not familiar to the majority of dermatologists, it might be of interest to add a sixth case of my own. REPORT OF A CASE A. R., a 5 year old white Cuban girl, came to the dermatologic consultation of the Hospital Municipal de Infancia de la Habana, on April 19, 1940. She was brought by her parents for treatment of a patch of alopecia which she had had on the vertex since birth. She presented on the vertex a round bald scleroderma-like plaque, 3 cm. in diameter, ivory white, smooth, polished and shiny. On palpation, this plaque was adherent to the underlying aponeurosis and somewhat depressed below the surface. On this area it was