98 



EINAE LONNBERG, MAMMALS COLLECTED IN CENTRAL AFRICA. 



tion between the name thus added and a real subspecific name. Such a distinction may 

 be made by adding before the racial name a certain word like »tribus», or »forma»,i 

 Since the above was written I have had the opportunity of reading the observations 

 on the variability of Kobus defassa made by A. de Calonne-Beaufaict^ in the Welle 

 district. The author quoted emphasizes the great variability of this Waterbuck accord- 

 ing to age, but his statements do not contradict the opinion set forth above concerning 

 the adult. 



Adenota kob thomasi Sclateb. 

 Skin of a male foetus from Rutshuru, 'V, 1914. Three male skulls. 



Redunca arundinum Boddaert. 



Two male skulls. 



Redunca redunca wardi Thomas. 



A male skull and a frontlet, presumably from Rutshuru. 



With regard to cranial measurements this skull is much larger than the typical 

 Redunca redunca, and also larger in some dimensions than Redunca bohor ugandce 

 Blaine. 



Greatest length of skull 



Bcisal length of skull 



Occiput to tip of nasals 



" » posterior end of nasals 



Orbit to gnathion 



Length of nasals 



Greatest width across orbits 



Least interorbital width 



Vertical diameter of orbits 



Alveolar edge of to" to upper brain of orbit 



Zygomatic width 



Length of palate 



Upper molar series 



to' 



If it is difficult to determine a skull with such dimensions as those recorded above 

 as identical with Redunca bohor ugandce Blaine, the dimensions of which are quoted 



1 The Russian ichthyologist Berg uses the word omorpha » for races of fishes, but this appears less suitable 

 as the words genus, species etc. are latin. 



2 Notes sur les phases de couleur chez Cobus defassa et Bos cajfer de la region de rUel6, Revue 

 zool. Africaine, Vol. IV, fasc. 2 — 3, Bruxelles 1916. 



