CERCOPITHECID^E 



725 



Their digestive organs are much modified, the stomach attaining 

 an extraordinary complexity, which may be described as follows. 

 An ordinary stomach must be supposed to be immensely elongated, 

 and gradually tapering from the 

 cardiac end to a very prolonged, 

 narrow, pyloric extremity. Then 

 t \vi 1 1( tngitudinal muscular bands, 

 corresponding in situation to the 

 greater and lesser curvatures of 

 an ordinary stomach — the former 

 commencing just below the fun- 

 dus, and the latter at the cardiac 

 orifice, and both proceeding 

 towards the pylorus — are de- 

 veloped, so as to pucker up the 

 cavity into a number of pouches, 

 exactly on the same principle as 

 the human colon is puckered up 

 by its three longitudinal bands. 

 These pouches are largest and 

 most strongly marked at the 

 oesophageal end, and becoming 

 less and less distinct, quite cease 

 several inches before the pylorus 

 is reached, the last part of the 

 organ being a simple smooth- 

 walled tube. The fundus, < il- 

 ea rdiac end of the stomach, is 

 formed by a single large sac, 

 slightly constricted on its under 

 surface by the prolongation of 

 the inferior longitudinal band, F,G ; of the skull and] 



aspect 01 tin- cranium "I Sen 



or that corresponding to the (From r ,,. Biainvffle.) 

 great curvature. The oesophagus 



enters into the upper part of the left, or pyloric end of this sac, or 

 rather at the point of junction between it and the second (also a 

 verv large) sacculus. Furthermore, the whole of this elongated 

 sacculated organ is, by the brevity, as it were, of the lesser curva- 

 ture, coiled upon itself in an irregularly spiral manner, so that 

 when in situ the pylorus comes to be placed very near the oesophageal 

 entrance. 



Nasalis. 1 — Skull resembling that of the Cercopitliecince in that 



the lower border of the nasal bones extends considerably below the 



lower border of the orbits, whereas in the other Semnopithecince the 



aperture of the nares extends upwards between the orbits. Nose 



1 Geoffrey, Ann. du Mus&wm, vol. xiw p. f»0 (1812). 



