Complicated labor in lower varieties of animals will follow lines similar to those for man and domesticated animals. Hemorrhage from trauma is not common at term, but several cases of abortion following injury have been seen. Postpartum hemorrhage might be expected in the higher apes which have a large discoid placenta similar to the human form, but when the placenta is more loosely attached and is subdivided as in lower forms, such bleeding is of no danger; when a cotyledon is torn from the ungulate uterine wall, a free hemorrhage sometimes occurs. Geoffroy’s Marmoset (_Leontocebus geoffroyi_). Puerperal relaxation of the uterus with fatal hemorrhage. The uterus is 4 cm. long, 15 mm. wide at intertubal line. Uterine wall averages 2 mm. in thickness. Peritoneal surface is smooth, glistening and intact. Uterine musculature is soft and relaxed. Entire organ is intensely congested and on section uterine cavity contains a large firm blood clot completely filling it. Mucosa is of deep purple color, shows many fragments of decidua and is the seat of profuse hemorrhage. Placenta previa is very rare. A row of cotyledons may form near the internal os, therefore like a placenta previa, but it appears to be of no consequence. Premature separation of the placenta is known to veterinarians, and is exemplified by the following case in our records: Black Lemur (_Lemur macaco_) was found dead in its cage. Upon autopsy the uterus contained a small fetus with one leg and the tail protruding from the vulva. The fetus was normal in size. There was a large amount of free blood in the uterine cavity and extensive extravasation into the myometrium. The placenta was completely detached. Rupture of the uterus and cervix have not been seen, but a traumatism of the vagina gave occasion for the following death: Bactrian Camel (_Camelus bactrianus_) died of shock in labor. Upon autopsy the animal was found to have hydatid disease of the liver, lungs, and spleen, cirrhosis of the liver, and nephrolithiasis. Protruding from the vulva was a portion of the fetal membranes, the whole vaginal wall and several coils of intestine which had escaped through a large rent in the posterior vaginal wall. The anterior wall was swollen and edematous, the whole region surrounded by clotted blood. The cervix was obliterated, the membranes unruptured, the fetus in the normal extended head presentation. The veil-like placenta was somewhat injected but otherwise normal. There was some hemorrhage about the rectum but none in the free peritoneum. This animal had broken her hind leg just above the fetlock three weeks before falling into labor, and was unable to stand. It is evident that the difficulty of delivery associated with an unnatural and forced posture due to the fractured leg was sufficient cause for the rupture of the vagina where the tissues were degenerated as a result of the coincident general disease.