Ears oblong-oval, about as long as the head; tragus lanceolate, nearly two-thirds the length of the auricle: fur reddish gray above, white beneath : interfemoral ample, the margin crenate on each side towards the tip, and fringed with short bristly hairs.
V. Nattereri, Desm. Mammal, p. 135.
Length of the head and body one inch eleven lines; of the head eight lines and a half; of the tail one inch seven lines; of the ears eight lines and a half; of the tragus five lines; breadth of the ears three lines and three quarters; of the tragus at the base one line; length of the fore-arm one inch six lines; of the thumb two lines and three quarters : extent of wing ten inches eight lines.
Head rather small; snout attenuated: nose a line in breadth at the extremity, slightly emarginated between the nostrils, convex above: all the face, excepting immediately above the nose, hairy, but the hair very thinly scattered about the eyes and chin, with a few bristly hairs longer than the others intermixed: gape extending as far as the posterior angle of the eye: a row of longish hairs on the upper lip forming a moustache : a large sebaceous gland above the eye advancing towards the nose, of a yellowish white colour; another gland on the upper lip immediately above the canine tooth, of the same colour with the rest of the face, causing a protuberant swelling at that spot, and furnished with long bristles: ears oblong-oval, rather broad, about the length of the head, the inner margin bending outwards, the external margin nearly straight, with a shallow notch about midway, nearly naked, excepting towards the base on the outside; tragus longer than in the last species, lanceolate, curving slightly outwards towards the tip, naked : flying and interfemoral membranes naked; the latter ample, furnished with a long spur*, between which and the end of the tail the margin has a crenate or puckered appearance, and is set with short bristly hairs; tip of the tail somewhat blunt and compressed, scarcely exserted for more than half a line: hind claws very strong, furnished with long hairs: thumb much smaller than in the last species. Fur long and silky, particularly about the upper part of the head and neck, of a light rufous brown, approaching to reddish gray above, the tips of the hairs being of this colour, the roots dusky brown; beneath silvery gray at the tips, black towards the roots: ears yellowish gray, the yellow tinge being most obvious within towards the base; tragus almost entirely yellowish: flying and interfemoral membranes dusky, but the latter paler than the former. In the female, the colour of the fur on the upper parts has a more reddish tinge than in the male.
This species occurs in hollow trees in the neighbourhood of buildings at Swaff ham Prior in Cambridgeshire. Mr Yarrell has received it from Colchester and Norwich. There are also specimens in the British Museum taken near London. It appears however to be very locally distributed.