KUNGL. SV. VET. AKADBMIENS HANDLINGAB. BAND 49. N:0 7. 



13 



The spleen was about elliptical measuring 15^2 cm. in length by 9 cm. in breadth. 

 It differed thus considerably in shape from the triangular spleen of Ovis, Gapra, 

 Antilope, Cephalophits etc. 



The colon was very little complicated. After a short ansa proximalis follow 

 1 Va centripetal, and 1 Va centrifugal coils before the peripheric coil in connection with 

 the jejunum is formed. 



The whole of the digestive apparatus is thus very simple in the Gerenuk, and 

 this stands evidently in connection with the remarkable adaptation of this animal 

 which enables it to secure tender leaves, berries etc., and thus obtain food-material 

 which is comparatively easily digested in spite of the aridity and general barreness 

 of its native country, at least during a great part of the year. ♦ 



Fig. 1. Diagram of the colic spiral of lAfhocranms walleri. 



A Waterbuck {Gdbus ellipsiprymnus canescens Lonnberg) had a papilla incisiva 

 which was rounded behind and situated on a broad anterior callosity of the palate. 

 Behind this a narrow palatal fold extended across the whole palate, but the follow- 

 ing 8 on one side, and 9 on the other, alternated and occupied only half the breadth 

 of the palate, although those of the left side extended somewhat across the mesial 

 line. These were all crenulated. Between the anterior premolars a last continuous 

 and arcuate fold extended across the whole palate. The tongue was provided with 

 about a dozen papillce vallatce on each side arranged in two rows. Papillce fungiformes 

 were rather numerous on the upper surface on the tongue as well. 



