168 PERISSODACTYLA. 



cepting on the back part of the head, and beginning of the neck where 

 it is much longer. There are only two nipples, situated between the 

 two thighs, or lower part of the abdomen. The external part of gene- 

 ration, or bearing, has a peak like the sow. On raising the uterus from 

 the rectum in the pelvis, we find their connexions much higher than in 

 animals in common ; even higher than the connexion of the bladder. 

 The common vagina is not long, about 2 inches. There is a pretty 

 considerable ridge at the mouth of the proper vagina which may be 

 called a hymen. The proper vagina is very long, which makes the 

 connexion between the rectum and this part so extensive. It is wide, 

 as also pretty smooth. Its adhesion through its whole length to the 

 rectum is so close as not to be easily separated. The os tincse hardly 

 projects ; it is wide. The common uterus is short, not 2 inches long. 

 The two horns go off laterally, are long and very rugous, which ruga? 

 are parallel with the horn, viz. longitudinal. The ovaria are small and 

 flat oval bodies. The Fallopian tubes run on the membrane, which 

 forms a loose capsule, but does not cover the ovarium. There were 

 little sacculi at the attachment of the ovaria 1 . 



The lungs appear to be a congeries of small lobes united together and 

 covered by the pleura. The lung on the left side has two fissures in its 

 anterior thin edge ; one opposite to the base of the heart, the other near 

 the apex ; and in the space between the two the lungs are mostly 

 wanting, to allow of the heart to be placed there. Its upper anterior 

 edge terminates in a process which comes forward toward the media- 

 stinum ; and the lower part of the anterior edge, below the lower fissure, 

 comes forward below the heart, toward the mediastinum below. The 

 lung on the right side is nearly the same, but is divided more distinctly 

 into three portions, one corresponding with the upper portion of the 

 left, the middle coming before the right of the heart, and the lower still 

 more forward, below it, or between the heart and diaphragm. A small 

 lobe of the lung is contained behind the inferior vena cava, and lies 

 between the diaphragm and heart. The trachea is not large ; therefore 

 the animal probably has not a strong bass voice : its cartilages are very 

 thick and broad. The heart is very large ; is shorter, broader, and more 

 compact than in most animals. The thoracic duct is large. The liver 

 is not large, and is divided into four lobes ; the left being the largest, 

 and the rest becoming smaller to the right. The middle lobe, which 

 receives the umbilical cord, is divided on its lower edge by three fissures, 

 and is again subdivided into smaller lobules. The right lobe is con- 

 tained behind the porta, forming the lobulus Spigelii. There is no 



1 [Hunt, Prep. No. 2778.] 



