I20 Field Columhian Museum — Zoology, Vol. i. 



at tip; lacrymal fossa deep and occupying all of the lacrymal. 

 Facial region rather broad between the orbits and fairly retaining 

 its width to end of nasals, where it narrows rapidly to end of pre- 

 maxillae, auditory bullae very large and rounded. Palatine rather 

 small, and not produced much beyond the middle of last molar. 

 Pterygoids rather slender. The skull differs from those of 

 Speke's and Waller's Gazelle by having the premaxill^e reach the 

 nasals, which is not the case with the others mentioned. 



INCHES. 



Total length of skull 8.00 



Fronto parietal suture to supraoccipital 2.50 



" " " lambdoidal suture 1.85 



Posterior end of nasals to frontoparietal suture 1.55 



Anterior rim of orbit to tip of premaxillae 3.80 



Length of nasals 2 . 05 



" " premaxillse 2 . 40 



Width of skull at anterior rim of orbit 2 . 40 



Lower rim of orbit to alveolus of last molar i . 12 



Extent of upper premolars 75 



" " " molars 1-48 



" " lower premolars 70 



" " " molars i • 5° 



Length of diastema of lower jaw 1.45 



Circumference of horn at base 3 . 60 



Length along curve 8.65 



Gazella spekei (Blyth). 



Gazella spekei. Speke's gazelle. Native name Dcro. 



a. $ ad. Laferug. 



b. 9 ad. Laferug. 



c. 9 ad. Le Gud. 

 d.-f. $ ad. Bodeleh. 



g.-h. 9 ad. Bodeleh. 

 /. 9 juv. Bodeleh. 



This is the gazelle of the high plateau, and first appeared to 

 us at Laferug. The two species seem to meet here, as both were 

 seen in the vicinity of this locality, but Pelzeln's gazelle was not 

 found any farther to the south, the present species replacing it 

 entirely. Speke's gazelle is smaller than its relative, but can never 

 be confounded with it, as it is easily distinguished by its peculiar 

 wrinkled nose, possessed by both sexes, but greatly modified in 

 the female. It inhabits the same kind of ground as Pelzeln's 

 gazelle is found in; stony bare stretches with patches of stunted 

 grass scattered over it, and it is very seldom met with among 



