32 MR. E. T. BENNETT ON A REMARKABLE 
character of implantation in fascicles belongs to some of the shorter hairs on the verge 
of the white patches ; which are also so far influenced by their proximity as to assume 
a portion of the colour that belongs to those parts, being white at the base and becom- 
ing towards the tips of the dull pale chestnut tinge that prevails on the body generally. 
But although in the Bat under consideration the curious arrangement which has just 
been described exists at perhaps its maximum of development, it is not to be looked 
upon as being confined to a single species. It is found also, but to a much less extent, 
in the nearly allied animal, obtained from the same country and by the same collector, 
to which Mr. Ogilby has recently given the name of Pteropus macrocephalus!. In the 
latter it is, however, so little conspicuous that it would scarcely fail to be overlooked 
if the attention were not especially directed to the ascertaining of its existence. The 
hairs of the sides of the neck in that species are of a pale dull fawn colour, are gene- 
rally slightly longer than the adjoining ones, and pass insensibly into those of the 
under surface, which resemble them in all respects except in being paler. There is 
among them no mass remarkable either for its colour or for its length, or indeed for any 
extraordinary appearance. Yet among them there will be found, on separating the fur 
so as to allow of an inspection of its mode of insertion, a part in which the hairs are 
implanted in bundles ; and it will be seen that the hairs so implanted have a tendency 
to diverge as from a common centre, which, however, on account of their softness, is 
by no means striking. The part at which these fascicled and diverging hairs are 
detected corresponds precisely with that of the white patches that deck the sides of the 
neck in the species that forms the subject of this communication; and the structure 
may consequently be safely regarded as analogous. M. Temminck has also described 
a corresponding structure in another species, designated by him, in his “ Monographies 
de Mammalogie’2, as the Pter. tittecheilus. He speaks of the males of his Bat as having 
on each side of the neck a tuft of hairs diverging from a common centre, which are 
white in the young animal, and become in the adult male (like the adjoining parts) of 
a bright red and eventually of an orange colour: and he believes that a similar arrange- 
ment exists also in the Pter. amplexicaudatus. That eminent zoologist is of opinion that 
the tuft of diverging hairs on the sides of the neck in his Pter. tittecheilus cover a glan- 
dular apparatus for the secretion of an odorous substance, which may probably afford 
indications to these animals in the season of their amours: and he suggests as ana- 
logous cases the cavity on the forehead of Rhinolophus Speoris, Geoff. ; the opening on 
the chest of Phyllostoma hastatum, Ej.; the little cavity under the throat of Dysopes 
velox, Temm. ; and the large pouch beneath the chin of Taphozous Saccolaimus, Bj. 
The view which has been taken by M. Temminck of the purposes for which this 
apparatus is designed is probably correct: if the possession of it be limited, as he 
' Proceedings Zool. Soc., part iii. p. 101. ? tom. i. p. 198. 
