1894.] MR. O. THOMAS ON GAZELLES FROM ALGERIA. 467 



Jahren seiner Anvvesenheit, sich verschaffen konnen" (Syst. 

 Uebers. i. p. 340). 



I believed D. alboguttata (i dead and buried," when I saw its 

 resurrection in lSSSin the ' Catalogue of Marsupials.' I consider 

 it my duty to give to this supposed Brazilian species of Didelphys 

 eternal repose, and to deliver zoological literature from an error 

 threatening to become hereditary from generation to generation. 



2. On some Gazelles brought by Sir Edmund Loder from 

 Algeria. By Oldfield Thomas. 



[Eeceived June 5, 1894.] 

 (Plate XXXII.) 



By the kindness of Sir Edmund Loder I have been permitted 

 to examine and describe some Gazelles brought by him at different 

 times from Algeria, a country in the Natural History of which 

 he has always taken much interest. 



Of late years two Gazelles have always been recognized as 

 natives of Algeria, namely G. dorcas, the Common Gazelle, and 

 G. cuvieri, the Mountain Gazelle, or " Edmee." Many Gazelle- 

 horns, however, evidently belonging to neither of these, having 

 come into his possession, Sir Edmund undertook an expedition 

 to obtain specimens of this unknown Gazelle, a quest in which he 

 was fortunately successful. On his bringing back the specimens 

 thus secured, together with another he had had some time in his 

 possession, I was surprised to recognize no less than four species, 

 two of them requiring description as new. The first of these 

 is the Beeni, an account of which is contained in the field- 

 notes now to be read by Sir Edmund; while the other, being 

 based on a skin purchased at Algiers many years ago, must unfor- 

 tunately still remain a mystery as to exact locality until some other 

 enterprising sportsman is able to find out where it really lives. 



Sir Edmund Loder is much to be congratulated on the success 

 of his expedition, and on the increase of our knowledge about the 

 Gazelles which has resulted from it. 



The following are the four species represented : — 



1. GAZELLA DORCAS, L. 



The Common Gazelle of the Algerian Sahara generally. 



2. Gazella cuvieri, Og. 



A fine male specimen of the " Edmee " from the mouutains 

 north of Biskra is among Sir E. Loder's trophies. (Its skull- 

 measurements are given on p. 472.) 



3. Gazella rufina, sp. n. 



Very similar in coloration to G. rufifrons. Gray, but distinguished 



