1891.] Zoology. 751 
and tip brown; the white occupying one-half of entire length. On 
the lower part of back the white becomes more and more soiled until 
it is scarely noticeable. Or the hairs may be described as brown on 
lower back, with slightly lighter centers that fade to pure white on neck, 
and occiput. Belly same as back, becoming lighter on head and neck, 
which is white, washed with brown. No distinct zones of color as on 
dorsal surface. At ventral aspect of junction of antebranchial mem- 
brane with the body is a small, triangular spot of white fur. Wing 
membrane externally covered with unicoled hairs, same shade as dor- 
sum, to line from middle of humerus to near knee. Upper surface of 
interfemoral membrane thinly clothed, same color as rump. Wing 
membranes from tarsi. Antebranchial from bases of first phalanges of 
thumbs. Face naked, with the exception of a few white bristles and a 
row of short white hairs from corner of mouth to antitragi. Lower 
jaw naked in front, bordered by a fold of skin, free in central part 
that passes from antitragus to antitragus. Another narrower fold 
leaves this at corners of mouth extending across the line in a slightly 
curved line. In its center this fold is greatly widened (see Fig. 6), hav- 
ing a slight central depression or pit with a small one on each side of 
it. From this widened part of fold a straight sided, naked patch 
extends backwards having, a trifle below its center, a laneolate pit. 
Below on each side this naked space throws out an arm terminating 
in a rounded lobe. Lower down, and separated by a line of hair, are , 
two warts, one on each side of central line, each with a slight depres- 
sion in its center. The sketch will, I think, explain this more easily 
than words. The white hair bordering this inverted T-shaped, naked 
space is very short and fine, quite invisible to the naked eye when the 
specimen is wet. I have purposely greatly exaggerated its length in 
the sketch that it may not be overlooked. 
Ears divided into two lobes of equal, proportion, and form with 
those of senex as figured by Dobson in Catl. Chir. Brit. Mus. Facial 
cutaneous folds, and the peculiar markings between the fourth and fifth 
fingers, and internal to the fifth, are apparently the same. These 
markings are not exactly the same on each side, several of the lines 
being branched, tuning-fork shaped, and not conforming one side with 
the other. They, therefore, can probably be but little relied upon for 
diagnostic purposes, 
Teet z gees re a AE de |. 
The only noticeable difference between the teeth of this specimen 
and those of senex (vide Dobson) is that in minor the second lower 

