300 ON MAMMALS FROM THE SOUDAN. [ Apr. 21, 
35 mm.”), with shorter ears, and with the remarkable character 
(if not due to accident) of having no white at the end of its tail. 
15. Lepus aruroricus H. & EK. 
6. g. Shendy. 1 September, 1902. 
92.93.94.97. 65622. Agageh, Kordofan. November 1902. 
39. S. Wad Medina, Blue Nile. 
16. Procavia RuFIcErS H. & EH. 
77. 6. Kaga Hills, Kordofan. 2 November, 1902. 
78.79.80.83.88. Agageh Hills. November. 
17. ORYX ALGAZEL DAMMAH Cretzschin. 
¢. Kordofan. 
Practically a topotype of the subspecies. 
When the ‘Book of Antelopes’ was published, owing to the 
predilection of the senior author for ‘‘ well-established” names, 
the term lewcoryx was used for the species to which Lichtenstein 
erroneously transferred that name, while the true leucoryx of the 
Persian Gulf was called by Gray’s name beatriz. ‘To put matters 
more in accordance with modern ideas on nomenclature, the 
Scimitar Oryx should bear the name algazel Oken; but as that 
name was founded on Cuvier’s figure of a Senegal specimen, and 
it is practically certain that the Eastern Soudanese form is at 
least. subspecifically distinct from the Western, a second name is 
required, and this we find in the “ Antilope dammah” of Riippell 
and Cretzschmar. A. dammah was erroneously identified by 
Riippell, and following him by Sclater and myself, with the Beisa, 
but by its locality (‘die grossen Steppen von Haraza ”) is clearly 
shown to be the Scimitar Oryx. This is fortunate, as the name 
dammah, being earlier than beisa, would have had to be used in 
the latter’s place had Riippell’s identification been correct, but 
now the Beisa is left with its familiar name unaltered. 
Briefly put, the nomenclature 1s as follows :— 
Scimitar Oryx. 
ORYX ALGAZEL Oken. 
O. leucoryax of authors generally, not of Pallas. 
Western form :— 
Cemas algazel Oken, Lehrb. Nat. ii. pt. 1. p. 741 (1816); 
ex L’Algazelle, F. Cuv. H. N. Mamm. 1. pl. 376 (1819). 
(Senegal. ) 
Eastern form :— 
Antilope dammah Cretzschm. Atl. Riipp. Reise, Mamm. 
p- 22 (footnote), 1826. (Haraza, Kordofan.) 
White Oryx. 
Oryx LEUCORYX Pall. 
Antilope lewcoryx Pall. Spice. Zool. xii. p. 17 (1777). 
Oryx beatriz Gray, P. Z.8. 1857, p. 157, and of authors 
generally. 
