XERUS CAPENSIS. 49 



Agrees with Xerus erythopus in having a pure white 

 streak along each side from the shoulder to the upper 

 parts of the thighs and with Xerus rutilus by the short- 

 ness and nature of the hairs of the upper parts of head 

 and body: the hairs of the named parts are straw-colored 

 with white tips , a few wholly blackish brown ones are 

 interspersed. In the Stuttgart collection I saw an indi- 

 vidual from the Cape colored like Xerus dabagdla v. Heug- 

 lin, viz: with a fleshy tinge. The entire absence of an 

 earconch distinguishes this species not only from the other 

 Xgrws-species but also fi'om all the other Sciuri hitherto 

 discovered , so that this alone at once suffices to characterize 

 this form. 



The black eyes are surrounded by a white circle. Whisk- 

 ers black. 



m. m. 



Length of head and body . 318 



» » tail with hairs (incomplete). . . about 260 

 » » » without hairs (incomplete). . » 225 



» » hind foot 68 



» » skull 59 



Width between the jugalia . 38.5 



» » » orbits 17.5 



Length of upper molar series 12 



Distance between incisor and first upper molar . 13 



In each jaw there are never more than four molars. 

 Incisors without exception always pure white and without 

 groove. 



It is not without reason that the form of the skull has at- 

 tracted the attention of different naturalists. In 1835 Rüppell 

 observed that there is a difference in the form of the skull 

 between Sciurus setosus and Uucoumbrinus and Sundevall wrote 

 (Om Professor I. Hedenborgs insamlingar of Daggdjur i Nord- 

 östra Africa och Arabien. 1842) „Maxime memorabilis est 

 „similitudo externa et dissimilitudo craniorum Sciuri leu- 

 „coumbrini et setosi , qui , secundum externa , varietates 

 „unius speciei , secundum crania diversi genera haberi pos- 



Notes from th.e Leyden Museixm , Vol. IV. 



