of Single Hypogastric artery in the Human Foetus. 331 
There is no record of the condition or conformation of the 
placenta. The body is fat and well-nourished, the abdomen being 
rather protuberant. At the pubes, no external genitalia have 
been formed, and though a small median papilla is attached to 
the suprapubic region, it proved, on histological examiuation, to 
consist only of epidermal and dermal tissues, while lacking any 
distinctive mammary structure. 
Fig. 11. Transverse section ( x 8) through the umbilical cord of specimen F. 
The single umbilical artery is seen to the right of the drawing. 
Posteriorly, in the coccygeal region, a small dimple with a 
coccygeal vortex of tine hairs was seen. Below this a sessile 
penis-like organ projects. This is evidently an enlarged clitoris. 
The cleft-like depression to its right side is a cul-de-sac, so that 
the anus is imperforate. 
The abdomen was opened and a dissection was made with a 
view of tracing the different branches of the abdominal aorta. 
Incidentally the following conditions were observed. The um- 
bilical vein resembles that of specimen E (and of the normal 
foetus) in its continuity with the ductus venosus and inferior 
caval vein. 
The great omentum is absent. There is a partial duodenal 
mesentery, but the mesenteric attachment to the posterior abdo- 
minal wall is greatly circumscribed, being concentrated near the 
duodenum and not extended to the right iliac region. The liver 
is very large, the excess being due to the extensive and massive 
left lobe which is also subdivided. The quadrate lobe is so far 
prolonged downwards that it enters the cavity of the umbilical 
hernia. The left lobe sends forwards a deeply notched offshoot 
which hangs down in front of the intestines. 
The pelvic viscera are in an abnormal state of development, 
