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Show 472 MR. O. THOMAS ON GAZELLES FROM ALGERIA. [Jline 5, for the species to be described merely on the specimens I then saw. Loche, in his work on the Mammals of Algeria, speaks of a Gazelle known to the Arabs as " el Eim," the name now used by them for 67. loderi, and no doubt the same species was intended. His reference runs as follows :-" Les Arabes distinguent encore sous les noms de el Rim et el Chergui deux autres Gazelles que nous n'avons pas jusqu'ici eu occasion d'examiner, et qui pourraient etre des metis des especes precedentes"1. This sentence was quoted by Lataste in 18852, but he had no information of his o wn to add to it. It has therefore been reserved for Sir E. Loder to clear up the history of this interesting Gazelle, so long known by reputation, but until now an unsolved mystery to the scientific world. As his expedition into the desert was undertaken expressly to obtain the Beem, and thereby settle a doubtful problem, it is only right that the species should bear his name, which I have therefore had great pleasure in attaching to it. Whether the companion problem of " el Chergui" is equally solved by Sir E. Loder's specimen of 67. rufina above described is a point which can be settled only when w e know the exact locality and Arab name of the latter. Skull-measurements (in millimetres) of the Algerian Gazelles referred to. (All adult males.) Gazella dorcas. Greatest length Basal length Greatest breadth Anterior nares, length (gnathion to nasal tip) Anterior nares, greatest breadth . Nasals, length Nasals, breadth Gnathion to orbit Palate, length Gnathion to alveolus of front premolar Length of molar series Horns-length round curves in front Basal circumference Least distance of horns apart at base Breadth across outside bases of two horns .. Tip to tip 170 158 78 50 20 44 19 85 83 37 55 3033 993 163 703 1123 67. cuvieri. 210 187 92 60 25 65 27 113 111 51 60 348 108 105 73 110 67. rufina. 67. loderi. (c.)204 93 69 30 52 34 124 120 59 06 292 119 22 86 141 194 173 85 54 24 57 24 101 98 44 55 330 95 14 65 192 1 Expl. Alg., M a m m . p. 69 (1867). 2 M a m m . Barb. p. 174 (1885) (Act. Linn. Soc. Bord. xxxix.). 3 In another finer specimen, whose basal length is about 5 m m . longer than in that measured. |