﻿NOTES ON SOME MAMMALS COLLECTED IN CONGO. 9 



C. j. macrurus. Crossarchus zebra, which has been recorded 

 by PousARGUE from French Congo (Kemo river) has a com- 

 paratively short tail, too, but it is quite different in coloura- 

 tion as already has been pointed out above. 



The differences with regard to the skull and the denti- 

 tion between this new Crossarchus and C. fasciatus are easily 

 seen from the following table of measurements: 



Greatest length of skull . 

 Basicranial length .... 

 Zygomatic breadtli .... 

 Least postorbital breadth 



» interorbital " 

 Distance between tips of postor 



bital processes . . . 

 Length of nasals (mesially) . 

 Breadth of posterior palate 

 Length of upper molar series 

 Transversal diameter of pm^ 

 Longest » » pm* 



Transvei'sal >> » m^ ' 



» » s ?TO^ 



Length of lower molar series 



Crossarchus fasciatus 



from 

 Natal 



76 mm. 



69 ' 



39,5 » 



16 » 



15 » 



24 )) 



18 » 



8,3 3 



20,5 > 



5 » 



8 » 



7 »' 



5,5 » 



23,5 » 



from "Caf- 

 fraria" 



Crossarchus zabroidet 



fi-om Congo 



70,5 mm. 



67 » 



37 » 



14,5 » 



13 » 



19 » 



14,5 » 



9,5 » 



17,7 » 



3,5 » 



6 * 



5,3 » 



4 » 



20,5 » 



The postorbital region of the skull is more constricted 

 in the new species than in C. fasciatus. The latter has also 

 much larger — as well longer as tbicker postorbital proces- 

 ses. The nasals of the new species is much shorter than 

 those of C. fasciatus. In the former the premaxillaries meet 

 the nasal processes of the f rontal so as to exclude the maxil- 

 laries from contact with the nasals, while in C. fasciatus 

 there is a suture between the nasals and the maxillaries 

 which in some specimens reaches a length of 5 mm. The poste- 

 rior palate is broader in the new species than in C. fasciatus. 



