168 EINAR LONNBERG, MAMMALS COLLECTED BY THE SWEDISH ZOOLOGICAL EXPEDITION ETC. 



am going to use this name, I do not think that it signifies at all a from other races 

 sharply defined form, but most probably such a one which merges gradually as well 

 into 0. g. granti on one hand as into G. g. brighti on the other. 



Gazella granti lacuum Neumann. 



Neumann: Sitz. ber. Ges. nafurf. Freunde, Berlin 1906, p. 243. 



The Grant Gazelles on the acacia steppe south of Guaso Nyiri around Lekiundu 

 river do not differ much from the typical O. g. granti except that they are paler and 

 the dark spot on the muzzle of the bucks is smaller and less pronounced. The dark 

 pygal band is present but not very sharply defined and sometimes it can hardly be 

 traced (PL XIV, fig. 5). In the females the markings as usual are better developed 

 but even, in some of them the lateral band is on the verge of disappearing, or quite 

 obsolete. On the northern side of Guaso Nyiri the Grant-gazelles were still paler. 

 The nasal spots of the bucks are often only a faint dusky cloud, and the dark pygal 

 band is practically absent, even if the hairs at that place are a shade darker. In 

 some small herds one or two females were seen with lateral bands, in other herds not 

 a single animal with lateral bands could be detected. This was for instance the case 

 at the water -place Njoro and these animals thus approach G. g. brighti, but the horns 

 were longer measuring in a buck shot at that place about 55 cm. along the anterior 

 curves and with a basal circumference of 15,6 cm. Equally pale bucks were shot 

 near Chanler Falls, and the best of them^ carried horns measuring 63 cm. and with 

 a basal circumference of 17,3 cm. These large horns and their shape v/hich is rather 

 similar to that in true G. granti prove that these specimens are not identical with 

 G. g. brighti. The spread of the horns is as usual among Grant-Gazelles variable. 

 In the specimen from Njoro (PI. XV, fig. 1) the distance from tip to tip is about 

 29 V2 cm. but in those from Chanler Falls only about 19 cm. On the two Lekiundu 

 bucks the same dimension was resp. 23 V2 and 16 cm. 



With regard to the size of the white rump-patch I cannot find any perceptible 

 difference between these animals and typical Grant Gazelles from Kilimanjaro. 



Generally speaking these Gazelles are somewhat smaller than the typical race, 

 and the measurements of the skulls as can be seen on the accompanying table agree 

 nearly with those recorded by Thomas^ for the type of G. g. brighti. But even the 

 measurements have in this case only relative value, and do not constitute with full 

 certainty distinguishing characteristics. This I have ascertained myself as I have 

 measured skulls of adult bucks of G g. granti from Kilimanjaro which have a shorter 

 condylobasal length than the average of my specimens from Guaso Nyiri, although 

 others were about 20 mm. longer. The smallest of my specimens is the one from 

 Njoro which, however, was a fully adult animal in good condition. This may stand 



1 The females in company with this buck had dark lateral bands according to Mr. Ctjnninghame's ob- 

 servation. 



^ Proc. Zool. Soc, London 1900, p. 805. 



