Long-tailed Hopping Mouse

The average adult would measure about 10–11 inches, according to official measurement by John Gould. The body without the tail would be about 4 inches in length in adults. The tail without the body would be about 6–7 inches in length in adults. The mouse had a grey coat with pink ears, large black eyes, and a long pink tail with bristles of hair on it. Unlike its relatives such as the short-tailed hopping mouse, the great hopping mouse, and the Mitchell's hopping mouse, the long-tailed hopping mouse was small compared to its long tail.

The long-tailed hopping mouse's habitat was in inland Australia. It ranged in the Northern Territory, South Australia, New South Wales and Western Australia. It preferred dry humid areas where there was greenery with it. The long-tailed hopping mouse dug burrows in clay-like ground and would use the excess soil to build layers above the ground to collect dew and moisture in the morning so it would have some type of water source.

The diet of the long-tailed hopping mouse consisted of fruits, grain, and plants. According to John Gould, the long-tailed hopping mouse liked raisins very much, but it was not considered a pest like its relatives. Long-tailed hopping mice would stay near farms and grocery stores because of the decrease in food the rapid populating was causing.