LONXBERG, MAMMALS. 35 



there at one time. The water in these lakes was brown, bitter, bad-smelling and 

 contained a good deal of carbonate of soda. Potamogeton and other water weeds grew 

 here and there and the shores were at some places fringed with a dense growth of Ncirpii*. 



The Hippopotamus lives also in a small lake Kongongare on the eastern side of 

 .Mem. It is also known from lake Djipe. 



A shot and killed Hippopotamus sinks but appears again floating on the surface 

 within l :'i hour. (SJOSTEDT. ) 



(iiraffa tipitclskirchi MATSCHIE. 

 (PI. 1, figs. 1 & 2; PI. 6, figs. 1 & 2.) 



Giraffa tippelskirchiMATSCUiE. Sitz. Ber. Naturf. Fr. Berlin 1898 p. 78. 



Mem: A female specimen (skeleton and skin) gravid when shot 10 /io 1905 (PI. 1 

 fig. 1). (Diameter of eye 40 mm. Iris dark.). - A big bull (skeleton and skin) shot 

 on the steppe NW. of Kiliimiiiiljrtro, Leitokitok 25 /5 1906 (PI. 1 fig. 2). 



The female agrees in appearance quite well with the plate which has been published 

 by LYDEKKER in Proc. Zool. Soc. London 1905 PL XI. 



The pattern of the colouration with the irregular and jagged dark spots is plainly 

 shown on the accompanying plate (fig. 1 ) from Professor SJOSTEDT'S very interesting pho- 

 tos. The spots are a little more jagged and star-like than those on LYDEKKER'S plate 

 quoted above. They agree thus better with the fig. of the type communicated by the 

 same author in Proc. Zool. Soc. 1904 Vol. 1 p. 214. But the colour agrees well with the 

 first quoted plate and the spots extend all the way over the yellowish grey cannon bones, 

 but then the phalanges are whitish without spots. The face is strongly mixed with 

 dark, etc. 



The bull is spotted almost as far down on the legs and feet as the female, and dark 

 in the face as well. The spots on the body and neck are not quite so jagged and star- 

 like as in the female, but the difference is not so great that it seems to indicate any racial 

 difference. A certain allowance must be made for individual variation, the more so as 

 LYDEKKER has pointed out (1. c. 1904 p. 217 footnote) that the jaggedness of the spots 

 can be less pronounced on one side than on the other in the same specimen. As no adult 

 bull of the typical G. tippelskirclu appears to have been collected a direct comparison 

 cannot be made, and thus this one must, at least pro tempore, be regarded as a representa- 

 tive of the same race. 



The structure of the skull of this bull is quite remarkable as may be seen on the 

 accompanying figures (PI. 6 figs. 1 & 2). It has evidently been an old animal as the 

 teeth are well worn, and it seems that such a specimen of this race has not yet been de- 

 scribed. As well Professor SJOSTEDT'S photo of the wounded animal as still more the 

 figures of its skull reproduced here (P1.6figs. 182) prove that Giraffa tippelskirchihas&gre&t 

 frontal horn when the bull is fully developed. This great frontal horn is not symmetrical 

 to the mesial line of the skull but its main mass lies on the right side of the same. The 

 armament of this Giraffe is, however, not confined to this frontal horn and the main 

 pair of parietal horns. In front of the great frontal horn there are namely no less than 

 three more osseous bosses (fig. 1 ) and it is of importance to note that these are not placed 



