THE FEMALE REPRODUCTIVE ORGANS 293 
cal cord. The fetus was normal in size and form, the face was extended 
and its lower portion far advanced in a caput suecedaneum. The meas- 
urements of the fetal were as follows : bitemporal 5.5 cm., biparietal 6 
cm., occipitomental 8.5 em., occipitofrontal 7.5 cm. The pelvis (dried .spec- 
imen) presents a most interesting condition. The sacrum is bent sharply 
forward, carrying with it the border of the ilia, which are bent upon 
themselves forward and downward. The lateral walls of the pelvis are 
greatly narrowed, the ischia drawn inward. The pubes and the symphy- 
sis are fairly normal. The pelvic measurements are : diagonal con- 
jugate 6 cm., true conjugate 4 cm., greatest transverse 4 cm. 
It is apparent at a glance that here was an impossible 
labor, since the head of the fetus could not possibly 
enter the pelvis, the size of which, intra vitam, must have 
been less than the above measurements by reason of the 
soft parts. "This is in the experience of the writer a 
unique case of a complete obstetric history, plus the 
specimens, of labor wdth an osteomalacic pelvis in a 
wild animal." 
Another case may be added to those already reported 
by Dr. Schumann, as follows: 
Hairy nimped Agouti {Dasyprocta prymnolopha). Dystocia. An 
apparently normal fetus occupies the left uterine horn. The nose was 
engaged in the pelvis and has been moulded in a curve pointing to the 
right. The fetus measures — bitemporal 30 mm., cervical-coronal 31 
mm., length of fetus 17 cm. Pelvic inlet in the fresh state measures 18 
mm. transversely and about 17 mm. anteroposteriorly. The umbilical cord is 
10 cm. long and appears normal as do the membranes. Placenta pre- 
sents as a spherical mass of hard dense consistency, 35 mm. in diameter 
and with apparently normal placental tissue occupying the lower border 
of this spherical mass. On section the mass shows areas of alternating 
soft red tissue separated by communicating trabeculae of dense white 
fibroid tissue. This mass is distinctly encapsulated, but the nature of 
the enclosing membrane is indeterminate. The pelvis in dry state shows 
evidences of malformation due to trauma. The right ileum is pushed 
forward and inward carrying the acetabulum a short distance inward 
and backward. There is a marked thickening about the right acetabu- 
lum. At the upper portion of the symphysis there is marked bending 
backward toward the sacrum with thickening of the bone. The last 
sacral vertebra is sharply bent and anchylosed, forming an angle of 
sixty degrees. The pelvic measurements in the dry state — at superior 
strait-transverse 24 mm., right oblique 23 mm., left oblique 26 mm., true 
conjugate 22 mm., outlet 17 mm., between the ischiatic spines. 
