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Show 1873.] DR. A. GUNTHER ON N E W FLYING SCIUIRRELS. 413 and kidney-shaped and very muscular; both were empty, that of the male containing only a rough calcareous pebble about half an inch wide. The male's windpipe is shaped like that of F. marila, figured in Yarrell, but is shorter, broader, and more roundish in its outline. I have preserved the specimen for future comparison. The trachea of the female is much narrower than that of the male, and has narrower rings ; the bronchi at the crutch separate, and meet again to leave a hole between. 4. Descriptions of three new Species of Flying Squirrels in the Collection of the British Museum. By Dr. A. GUNTHER, F.R.S., F.Z.S. [Eeceived February 26, 1873.] (Plates XXXVII., XXXVIII.) PTEROMYS TEPHROMELAS. (Plate XXXVII.) All the upper parts and the tail black ; under-fur ash-coloured; on parts where the long black hairs have been rubbed off, as between the shoulders, behind the ears, on the forehead, and sometimes on the tail, the grey of the under-fur is more conspicuous. Lower parts of the body and parachute very sparsely covered with greyish-brown hair, except along the median line of the chest and abdomen. Cheeks without bristles; ears of moderate size; incisors of an adult female white. Length of the body from the nose to the vent 10 inches ; of the tail 11 inches ; of the carpal spur 2 inches. An adult female, from Pinang, has been presented by his Grace the Duke of Argyll to the British Museum. A second younger female has been obtained in a collection from Malacca together with the species of Sciuropterus described hereafter. PTEROMYS PHCEOMELAS. All the upper parts and the tail brownish black, on the neck and middle of the back deep black ; under-fur dark chestnut-brown. The longer hairs on the hinder half of the back and on the sides with greyish-white tips. Lower parts of the body and parachute sparsely covered with woolly chestnut-brown hair, more densely along the middle of the chest and abdomen and on the outer half of the parachute. Cheeks without bristles ; ears of moderate size; incisors of an adult female yellow. Length of the body from the nose to the vent 13 inches ; of the tail 11£ inches ; of the carpal spur 3f inches. There is only one specimen, an adult female, from Borneo in the British Museum. It is allied to the preceding species, but conspicuously larger, and distinguished by its brown under-fur. SCIUROPTERUS PULVERULENTUS. (Plate XXXVIII.) Upper parts of tbe body and parachute brownish black, powdered |
