Matekial foe the Study of Ruminants. 



1!) 



portion measuring about 05 mm. in diameter. The length of the organ 

 is about 1 L0 mm. 



The psalterium is much better developed than in C. melanorhoeus. 

 It is elongate almost cylindrical about 0 cm. in longitudinal and 3 in 

 transversal diameter. 



The abomasus measures about 10 cm. along the middle of its 

 curvature. 



The papilla? of the paunch have the same general shape as in 

 the »isello», but are, of course, larger, attaining a length of 5 or 0 

 mm. in some places, and a breadth of 2 '/2 mm. at their apex. The 

 cells of the reticulum have a diameter of 10 — 13 mm., but their walls 

 are low in this antelope, too, hardly measuring IV2 mm. in height. 

 The stellate secondary septa are partly well developed. The psalte- 

 rium is conspicuously thick-walled and muscular. There are 9 primary 

 folds which seem thick and are strongly armed by stoutly conical but 

 sharply pointed papillae. Although the folds are thus in some respects 

 remarkably well developed, their height is strikingly low, mostly about 

 10 mm., or less, only one attaining the height of 13 mm. Thanks to 

 this the free lumen of the psalterium is unusually large in comparison 

 with the same of other ruminants. Only in three of the lateral loculi 

 I have seen small rudiments of as it seems secondary folds. The 

 interspaces between the folds are beset with long, slender, and recurved 

 papilla?. The abomasus which is very sharply defined from the psalte- 

 rium, is provided with about ten (or twelve) longitudinal folds. These 

 are much more strongly developed in this species than in G. melanorhoeus 

 and attain a main height of 8 — 12 mm. The exact number is difficult 

 to tell, because some folds branch off from others, and other anastomose. 

 In the fundus-portion there is also a number of smaller transversal 

 folds. The longitudinal main folds cease in a distance from the py- 

 lorus of about 8 cm. 



A comparison between the ventricles of these two species of 

 of Cephaloplius indicates that they differ in several respects with regard 

 to some details as has already been mentioned. On the whole, it 

 seems as if the ventricle of the larger species was a little better 

 suited to the digestion of coarser food than that of the smaller, but 

 even the larger of the two differs in several respects from the common 

 grass-eating ruminants. The capacity of the stomach is not so large 

 as could be expected when compared with the size of the animal. 



