APPENDIX: NO. XXXIX- 39 
XXXIX. 
Description or tHE INpIvipuAL oF a Species or Bar (?Vespezrris10 
PRUINOSUS), FOUND IN THE IstaNp oF SoutH RonaLpsHay, IN 
THE ORKNEYS, IN THE YEAR 1847. (See Zool. [2343], 2695, &c.)' 
[‘ Zoologist,’ viii. (1850) pp. 2813, 2814. ] 
I nave much pleasure in sending a description of this Bat, according 
to the requests of Mr. 'Tomes and Mr. Newman. I am sorry that 
T am not enough of an artist to be able to make a drawing of the 
more characteristic parts. The teeth appear to be of the insectivorous 
form: the formula of dentition is, I. 4, C. 3, P.M. 2, M. f~ Ebe 
upper incisor is close to the canine, there being apparently no 
teeth in front in the upper jaw. ‘The divisions between the teeth of 
the lower jaw are not very easily made ont in this dried specimen, 
and it is therefore possible that the formula I have given may be 
incorrect. The ear is somewhat like that of the Noctule: the upper 
angle is rather more depressed, and the lobe does not appear to 
descend below the level of the opening of the ear; but as it is 
somewhat crushed, this is not very certain: also the tragus is longer 
than in the Noctule. The ear is nearly covered with hair, inside and 
out, except at the margin, where the black skin—supported on 
cartilage curled back from the concave side cf the ear—is quite 
exposed. The orifice of the nostrils is comma-shaped, and the 
muzzle is of similar proportions to that of the Noctule. The face, 
head, and the whole of the body, are covered with long hair; each 
hair divided into four belts of colour, dark brown at the roots, then 
light tawny, again dark brown, and white at the tips: each of these 
belts, in those parts of the body where the hair is longest, is an 
eighth of an inch in breadth, except the white belt, which is less. 
The hair of the upper surface extends over the whole of the inter- 
femoral membrane and the backs of the toes of the feet: in these 
situations, the colours of the hairs have blended into two only, 
brown tipped with white. It passes, without decrease in thickness, 
from the sides of the body upon the flying membrane, and ends 
abruptly in an imaginary line drawn from the foot across the middle 
of the humerus to the anterior margin of the membrane: that is it 
extends for an inch, more or less, beyond the body on each side, and 
over the whole of the membrane of the tail. On the upper surface 
of the wing there is also a very small tuft in the hollow of the bend 
of the elbow, another between the root of the thumb and fore-finger, 
and a few short scattered hairs on other parts near the principal 
bones of the wing. Underneath the colours are less bright than on 
the back. As the hairs leave the body they gradually change to 
tawny, and they extend in the form of a close pubescence along the 
anterior part of the flying membrane as far as to a little beyond 
the wrist; indeed nearly the whole of the third metacarpal is 
1 (See Nos. XXVI. and XXX VII—Lp, | 
