Ears with two hairy lines on each side.
Wings with little tufts of short hairs near the side of the body beneath.
(Nose leaf destroyed.) Body, 2 inches 3-12; fore-arm, 1 11-12; tail 11-12; fore-legs, 9-12; ears, 7-12.
Number 2.

Scotophilus morio, Gray.
Back uniform, brownish black, scarcely paler beneath; cheeks nearly black; underside of wings, and interfemoral membrane with lines of hairs; heel bone elongated, slender; ears moderate rounded; tragus oblong blunt; fore-arm bone, 1 10-12; shin bone, 9-12 of an inch.
Number 4.

Scotophilus gouldii, Gray.
Blackish, hinder half of the back brownish; sides and abdomen brownish ash; ears rather large, broad; tragus half ovate; underside of the wings and interfemoral membrane with lines of hairs.
Var.1.Hinder part of the back greyish; sides of the abdomen grey.
Inhabits Australasia, Mr.Gould.
Number 5.

Scotophilus australis, Gray.
Back blackish; tips of the hairs rather browner; beneath rather paler on the sides of the abdomen; ears small; tragus oval lanceolate, rather crescent-shaped; wings, with sixteen or eighteen oblique cross lines of hairs under each fore-arm, and scattered hairs on the sides of the body; fore-arm, bone, 1 5-12; shin bone, 15-24.

Var.