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Show 1883.] MR. P. L. SCLATER O N T R A G E L A P H U S G R A T U S . 35 On visiting the menagerie of the Jardin des Plantes of Paris, in the autumn after I had read m y paper, M . Alphonse Milne-Edwards called m y attention to a pair of Antelopes of the genus Tragelaphus, which he had then lately received from the Jardin d'Accli-matation, and which he was disposed to consider referable to the Tragelaphus euryceros of Gray. But although the markings somewhat resembled those of the last-named species, the long-extended hoofs showed that these animals belonged to the swamp-frequenting division of Tragelaphus typified by Tr. spekii ; and I was of opinion that they were none other than a pair of the same species as that of which I had just described the female as Tr. gratus. In order to endeavour to settle the question, on m y return to London I sent the skin of T. gratus to M . A. Milne-Edwards for comparison, and convinced him, I believe, that my opinion was probably correct. On visiting the Jardin des Plantes again in the autumn of 1881,1 had the pleasure of inspecting for a second time this fine pair of Antelopes, then accompanied by a young female born in the previous December; and Mr. Keulemans being at that time in Paris, I requested him, with M . Milne-Edwards's sanction, to prepare tbe water-colour drawings of them, which I now exhibit (Plate VIII.). M. Milne-Edwards has kindly favoured me with the subjoined notes on these Antelopes :- " Le Museum a fait l'acquisition de la femelle du Tragelaphus le 10 mars 1876, et du male le 19 novembre 1879. " M . Geoffroy St.-Hilaire les avait regus du Gaboon. " L a femelle a ete couverte le 10 avril 1880, et elle a mis bas le 4 decembre apres 7 mois et 24 jours de gestation. La jeune biche qui venait de naitre s'est parfaitenient developpe malgre les froids de l'hiver. Un jeune male est ne en decembre 1881, mais il n'a pas vecu; sa depouille a ete prepare et figure dans les galeries du M u seum. " Nous possedons done aujourd'hui 2 femelles et un male ; le jeune femelle a 6te couverte dernierement; elle avait alors 22 mois ; sa mere est pleine et mettra bas probablement ce mois-ci. " Ces animaux ont des allures lourdes, ils sont peu gracieux quand ils courent et semblent embarrasses de leurs longues pattes. Le male est mechant et il laboure sans cesse le sol avec ses cornes ; les femelles sont tres douces. Ces Antilopes vivent certainement dans les endroits marecageux, car ils aiment a tremper leurs pattes dans les abreuvoirs et ils restent souvent fort longtemps dans cette position. " Le pelage ne change pas de couleur avec les saisons, mais les jeunes males sont tout-a-fait semblables avec les femelles ; je ne sais pas a quel age ils reverent leur robe definitive." I find that there is also a specimen of this Antelope in the collection of the British Museum. It was received from the Gaboon along with a lot of other Mammals by Mr. E. Gerrard, jun., in 1882 ; and the skin is now mounted. I exhibit a drawing by Mr. Smit (see p. 36) of the head and horns of this specimen, which it will be observed agree in every respect with those of the example in the Jardin des Plantes. This specimen stands about 42 inches in height at the shoulders, 1 3* |