ANATOMY OF THE SONDAIC RHINOCEROS. 187 



The Stomach. (Plate XXXIII. and Plate XXXVI. fig. 2.) 



The intra-abdominal part of the cesophagus {(e) measured 6 inches. 



The part of the stomach that most distinctly presented itself was the greater 

 curvature, and it was this part that was most closely in contact with the anterior 

 parietes. 



In shape the viscus bore a near resemblance to the stomach of the Horse, a resem- 

 blance much more close than that presented by either R. sumatrensis or M. indicus. 



The oesophageal and pyloric orifices were approximated, and a straight line drawn 

 between these openings measured only 6 inches. This narrow interval was occupied 

 by the gastro-hepatic omentum and the coronary artery (G.a). 



The cardiac portion of the stomach extended 19 inches to the left of a line drawn 

 vertically down across the viscus from the oesophageal opening to the greater curvature. 

 This portion was much more extensive and protuberant than the like part of the stomach 

 of J?, sumatrensis, as depicted by Professor Garrod (P. Z. S. 1873). It showed a faint 

 indication of a division into two cul-de-sacs [s.c, i.c), of which the upper (s.f) was the 

 larger. 



The superior diverticulum corresponded in position with the conical cul-de-sac 

 noticed by Professor Garrod in the cardiac part of the stomach of B. sumatrensis. In 

 the present case, however, the upper cul-de-sac was well rounded, and showed no trace 

 of a conical outline. The separation into two sacs was more pronounced when the 

 viscus was empty than when it was distended. At the pyloric end of the stomach was a 

 globular cul-de-sac (|J.c), of much smaller size than those met with at the cardiac end. 

 As regards its pyloric segment, the stomach in the present instance bore a closer resem- 

 blance to the stomach of B. indicus than to that of B. sumatrensis. In Professor 

 Garrod's drawing of the viscus of the latter animal the pyloric cul-de-sac is represented 

 as exceeding in size the cardiac diverticulum. The depth of the stomach, as measured 

 along a vertical line extending from the oesophageal orifice to the greater curve, was 

 24 inches, and its greatest width 37 inches. The latter measurement included both the 

 pyloric and the superior cardiac cul-de-sacs. 



Interior of Stomach. — Prof. Garrod has described the gastric mucous membrane of 

 this Ehinoceros as well as of Ceratorhinus sumatrensis, and has pointed out that they 

 agree with each other and with the Horse and Tapir in the great extension of the 

 oesophageal lining membrane over the cardiac surface of the organ ; in our specimen 

 the white, tough, epithelial lining of the cardiac portion of the stomach was sharply 

 marked off from the reddish, soft, mucous membrane which lined the rest of the stomach ; 

 the latter appeared to be extremely thick, and was traversed here and there by furrows, 

 as indicated in the accompanying drawing (PI. XXXVI. fig. 2). The drawing illus- 

 trates the marked difi'erence in colour, as well as in texture, of the cardiac and pyloric 

 membrane. 



