CEPHALOiniUS SILVICULTOR. 187 



lives loiig or short a time it notwithstanding has lived in 

 anormal conditions. And nine out of ten times the bony 

 parts teache us that the apparently so healthy looking 

 animal de facto lived in such anormal conditions. So here 

 with the Rotterdam-animal. The skeleton taken as a whole 

 is less developed, as it were suppressed, smaller of shape, 

 bone for bone is shorter than in the skeleton of our younger 

 specimen : especially the horns are in anormal conditions 

 and much shorter than normally, they measure 10.5 cm., 

 the horn-cores about 8 cm., meanwhile the same parts 

 of the younger one measure the horns 16 cm. and the 

 cores about 12 cm.; one of the horns ends in a kind of 

 knob ! Very interesting it is that although often are to 

 observe phenomena like the above described in skeletons 

 of animals kept in confinement, these changed conditions 

 of life seem generally never to afiect the exterior of the 

 animal, so that the color and especially the distribution of 

 colors seem to be like those under normal circumstances ; 

 so it too is in the Rotterdam-specimen, the coloring is to 

 trust, not the skeleton. 



From the above considerations and exhibited descriptions 

 we come to the conclusion that to a throughout intelli- 

 gibility of this Antelope-species we want more material, 

 especially fresh specimens from the Congo and from loca- 

 lities where the animal is living between that locality and 

 Liberia, and above all things very exact descriptions as 

 well as correctly drawn figures are urgent desiderata. 



NB. Perhaps later on it may turn out that the Congo-, 

 or southern species specifically differs from the Liberian, 

 and again that the skull with the so remarkably curved 

 horns belongs to an animal of a quite different form, f. i. 

 more like the figure 2 on plate XIV of the book of An- 

 telopes. If so then I propose to call the Southern or Congo- 

 animal Thomasi and that with curved horns Sdateri. 



Notes from the Leyden Museuin, Vol. XXII. 



