This author saw a man with numerous scars and cuts on his arm. Every time, the man explained, he wished to approach his young wife he first had to make a cut in his arm. She would then suck the wound and during this act become violently excited sexually. Blumroder saw a man bitten in the breast by his consort during conjugation in the great sexual excitement at the acme of libido. One of the author’s patients, a lady of good social standing, thirty years of age, took great delight, while sitting on her consort’s lap, in biting the lobes of his ears or his arms, until he screamed with pain. He always carried marks of her teeth on his body. Post initum the face of this otherwise pretty woman became distorted. She lay for some time with open mouth, showing her teeth, and her face assuming an ironical, cruel expression. In Moll’s case absolute frigidity is combined with sadism. The woman, twenty-six years of age, has been married for eight years and has one child. She presents signs of hysteria and neurasthenia. She never had any desire congressionis and until her marriage remained ignorant of any knowledge of sexual matters. Initus to her is not only no pleasure but on the contrary a distasteful act, and the repugnance of it has constantly increased. She can not conceive how the lumbus can have anything to do with love. She loves her husband and finds decided pleasure in kissing him. But while kissing him she experiences great lust when allowed to bite him. She would find the greatest pleasure if she could so bite him that his blood would flow. She was better satisfied, if instead of having commixtio she was bitten by her husband and allowed to bite him. When her biting caused her husband too much pain she regretted the act. A few years ago the author treated a patient, a French lady of thirty-five years of age, who had normal genital organs and was otherwise well, except that she was laid up in a hospital in Paris for eight weeks with rheumatism. She found great delight in having her consort sugere et osculare mammas. She always requested him to continue this practice for a considerable length of time. At the height of the orgasm in complexu venereo, her face becomes distorted by ferocity, taking on a cruel look and showing her teeth. At the same time she has spasms of the muscles of the back, by which the entire body is bent backwards, the spinal column forming a convex arc at the anterior aspect, the veritable opisthotonus often seen in grand hysteria. After the paroxysm she invariably tries to choke her consort, but desists from her intent before she has done any real harm or having caused him any real pain. Hausler reports the case of a pregnant woman who had a great desire for her husband’s blood. Several times, while he was asleep, she stabbed him and sucked his blood.