These pathological irradiations of the sexual sphere are associated voluntarily with jealous obsessions and ideas of persecution, which make the subjects furious, and which are confirmed by their paræsthesias and hallucinations. Illusions of memory play a great part in these cases, for the subjects have often never felt what they complain of, and it is then a question of veritable hallucinational memory. We may here observe by the way that, even among healthy people, the sexual passions, like the others, always tend to falsify memory, making things appear in the exclusive sense of the affective state. Once fixed in the memory, such conceptions, the false tendency of which was originally based on passion, gradually assume the subjective character of certainty. Cool-headed people, or those whose affective state directs them to contrary conceptions, then see in such individuals a deliberate intention to misrepresent the facts. This is the reason why people so often hurl mutual insults at each others heads, calling each other liars and calumniators, owing to the affective illusion of memory. (4). One of the worst of the sexual anomalies in the insane is _pathological jealousy_, especially in men. Their wives then become martyrs, especially in cases of alcoholism and paranoia. It is not uncommon for assassination to put an end to their torments. Among insane women, jealousy is certainly not less, but they have less legal power and less muscular strength. The most violent jealousy is found in alcoholics. Jealous delirium renders the subject furious; a word, a look, or some trivial circumstance are enough for him to prove the infidelity of his wife. The latter has to avoid the slightest thing which might arouse jealousy, but all in vain; reserve and even prudery are regarded by the jealous husband as hypocrisy. The unfortunate man watches his wife, night and day, like a watchdog: he threatens and insults her with no reason, and calumniates her in all ways, even in the presence of a third party. He even lays elaborate traps for her. Cases of this kind are legion. (5). It is necessary to say that the _sexual paræsthesias_, of which we have spoken, sadism, masochism, fetichism, inversion, etc., often occur in the insane. (6). The most atrocious sexual crimes are very often the work of idiots or imbeciles, but especially _moral idiots_, _i.e._, persons whose idiocy is limited to the moral sense, who are also called simply _amoral_. This is due to hereditary taint, an innate absence of all sentiments of sympathy, pity and duty. Rape, violation of children, sexual assassination, etc., are usually due to the concomitant action of moral idiocy and violent or perverted sexual passions.