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Show 1899.] ON THE GAZELLES OF ALGERIA. 593 4. Supplemental Note on the Distribution of Loder's Gazelle and the Dorcas Gazelle in Algeria. By A L F R ED E. PEASE, M.P., F.Z.S. [Eeceived April 4, 1899.] I find that a previous paper which I contributed on the Antelopes of Algeria (see P. Z. S. 1896, p. 809) requires correcting in some important particulars, especially in respect of tbe distribution of the Dorcas and Loder's Gazelle. Before dealing with the question of their distribution I might supplement what I have already written as to the names by which these different species are distinguished by the Arabs. In the North-eastern part of the Algerian Sahara the Dorcas Gazelle (Gazella dorcas) is generally known simply by the name " Rhezal"' or " Rhezal es sahara," the gazelle of the desert, in contradistinction to " Rhezal el djebel," the gazelle of the mountain (the Admi or Edmi, 67. cuvieri). In the neighbourhood of the Oued Djedi aud Bou Saada the Dorcas is called " senny," in the Central Sahara it is called " swain." A buck of any species is called " atrous." Till my last journey this year I have always spelt the Arab name for Loder's Gazelle (67. loderi) " Rhirae," but I think this is not so phonetically correct as Sir Edmund Loder's spelling, " Reem." The Arab word is spelt with the three Arabic letters ra, ia, mim, which reduced to English letters would be " rym " or " rim " and pronounced " reem." The description of the range of both the Dorcas and Loder's Gazelle requires correcting. In the first place, the Dorcas is not restricted to any such belt of desert as the first 100 miles or so south of the Atlas range. It is to be found on the smaller deserts north of the last ranges of the Atlas. This last winter I saw them and got one specimen from the country south of the Chott el Hodna and north of Bou Saiida, a district known to the French locally as the Little Sahara. I found the Dorcas Gazelle, after crossing the Oued Djedi, all the way to the Mzab, in the Mzab between the Mzab and Ouargla, and south and east of Ouargla. It is to be found in the Central Sahara in the Touareg Country and in the neighbourhood of Ghadamis. Wherever the country is not purely sand-desert, and where immunity from molestation and suitable vegetation allow it to live, it is to be met with; and even in the purely sand-desert south of Tougourt and near the Oued Ighaghar I found it in small bands. In the sand-desert between Ouargla and the Erg, where I expected to find only the Rime, and in the region of the Gantaras between Hassi Tafaya and the Oued Ighaghar, I found it often on the same ground as the Rime (Gazella loderi). From my own observation and from the information I picked up from my Chaambi hunter and guides, I feel convinced that though the Dorcas travels often into the sand-desert, the Rime never quits the sand-country for the stony deserts, though I have of course seen the Rime on the |