The patient was a lad æt. 18. At six years suffered from periodic frontal headaches and hebetude. After two years had vertigo and “absences.” The character changed, and he became strong and irritable. He attempted murder at seventeen, and shortly thereafter had the first attack of “classical” epilepsy. This was followed at intervals by other seizures, and he died in status epilepticus. The autopsy showed numerous cysticercus cysts in the pia, some on the surface free, others embedded in the cortex, which tore as they were removed. These cysts varied in size from a pin's head to a small hazel nut. There were a few subcortical cysts, some in the basal ganglia and lateral ventricles. The pons, cerebellum, and cord were free from cysts, as were also the internal organs. Cysticercosis produces in the brain the same symptoms as other focal lesions. When multiple, and especially when they arise in the period of development, they may produce, instead of an epileptiform phenomenon, a true epilepsy.