118 BULLETIN 99, UNITED STATES NATIONAL MUSEUM. 
one odd skull and one complete skeleton (Rainey, Tarlton); Nakuru, 
1 odd skull (K. Roosevelt); Ngare Nyuki River, 2 (Rainey); Palm 
Springs, 5 (Rainey); Southern Guaso Nyiro River, 30 (Mearns, T. 
Roosevelt, K. Roosevelt, Loring, Tarlton, Draper, Heller); Telek 
River, 12, including three odd skulls (Rainey, Johnston). 
In Heller’s field journal of the Rainey Expedition is an account, 
dated Kabalolot Hill, April 30, 1911, of a chase on horseback to 
capture a young Thomson’s gazelle. Although only about one week 
old, this little animal gave Mr. Rainey a hard run of four or five 
miles before he was overtaken and captured. 
As compared with the excellent series from the Sotik our material 
from northern localities is far from satisfactory. It might be expected 
that sufficient specimens from the vicinity of Lake Hannington, 
Lake Nakuro, and Naivasha would make it possible to recognize 
more forms; but the available material shows no characters of value 
between specimens from northern and southern localities. 
GAZELLA THOMSONII RUWANZ (Knottnerus-Meyer). 
1910. Eudorcas ruwanae KNoTrNeRuUS-MEYER, Sitz.-ber. Ges. nat. Freunde Ber- 
lin, No. 3, p. 121. March. (Ruwana Steppe, east of Victoria Nyanza, 
German East Africa; type in Berlin Museum.) 
Specimens.—Two, as follows: 
GerMAN East Arrica: Between Guta and Ikoma, 2 (Clark). 
This is one of the smallest subspecies of Gazella thomsonu. The 
specimens are virtually topotypes and, considering their small size, 
are referred to ruwanx without hesitation. Four other forms have 
been described from nearby localities, some of which are doubtless 
synonymous with ruwane. These are Hudorcas biedermanni Knott- 
nerus-Meyer,! from Schirati, eastern shore of Victoria Nyanza, German 
East Africa; 2. mundorosica Knottnerus-Meyer,? from Mundorosi 
Plains, German East Africa; E. thomsoni behni Zukowsky,* from south 
of Ikomo, German East Africa, said to be still smaller than Gazella 
thomsonit ruwane; and E. t. seringetica Zukowsky,* from the Seringeti 
Plains, German East Africa. From further south, in Usukuma, have 
been described Eudorcas langheldi Knottnerus-Meyer,®> and E. 
thomsoni dieseneri Zukowsky.* We have no material from this region. 
1 Sitz.-ber. Ges. nat. Freunde Berlin, 1910, No. 3, p. 110. March, 1910. 
2 Sitz.-ber. Ges. nat. Freunde Berlin, 1910, No. 3, p. 117. March, 1910. 
2 Archiv f. Nat., 80 Jahrg., Abt. A, Heft 1, p.61. 1914. 
4 Archiv f. Nat., 80 Jahrg., Abt. A, Heft 1, p. 93. 1914. 
® Sitz.-ber. Ges. nat. Freunde Berlin, 1910, No. 3, p.111. March, 1910. 
6 Archiv f. Nat., 80 Jahrg., Abt. A, Heft 1, p.63. 1914. 
