658 CHIROPTERA 
and hollowed behind, and their substance quite thin. Premolars 2. 
Represented by -/. ornatus of the Solomon Islands. 
Mr. O. Thomas, the describer of this Bat, remarks that it is 
evidently more nearly allied to the preceding than to the succeeding 
genera, although it agrees with Cwlops in the rudimentary tail. 
Ehinonycteris? and Tricnops.2—These are two allied genera with 
well-developed tails; the former 
being represented by FR. auruntia 
from Australia, and the latter by 
T. persicus from Persia and Eastern 
Africa. Tvrienops (Fig. 306) is 
characterised by the remarkable 
form of its nasal appendages and 
ears, and the presence of a peculiar 
osseous projection from the 
proximal extremity of the second 
phalanx of the fourth finger. 
Cclops.-—This genus is known 
only by a single species, C. frithi, 
from the Bengal Sunderbans, 
Fic. 306.—Head of Tricenops persicus. x 2. 4 7 
(From Dobson, Monogr. Asiat. Chiropt.) Java, and Siam (in the roof of 
the great pagoda at Laos); and 
is distinguished, not only by the form of its nose-leaf, but also by 
the great length of the metacarpal of the index finger, as well as 
by the shortness of the calcar and interfemoral membrane and the 
rudimental tail. 
Family NYCTERIDA. 
This small family, including only two genera of Bats of peculiar 
aspect, limited to the tropical and subtropical parts of the eastern 
hemisphere, is distinguished from the Rhinolophide by the presence 
of a distinct tragus to the ear, and by the premaxille being cartila- 
ginous or small and separated from one another in front by a dis- 
tinct space. 
Megaderma.A—Dentition: i$, ¢ 4, p +, m 3; total 28 or 26. 
This genus, which is represented by five species, is readily recognised 
by the absence of upper incisors, the cylindrical narrow muzzle 
surmounted by an erect naked cutaneous nose-leaf, the base of 
which conceals the nasal orifices, by the immense connate ears with 
large bifid tragi, and by the great extent of the interfemoral 
membrane, in the base of which the very short tail is concealed. 
M. gigas (Fig. 307), from Central Queensland (length of forearm 4°2 
1 Gray, Proc. Zool. Soc. 1847, p. 16, ? Dobson, Journ. As. Soe. Bengal, 
vol. xl. p. 455 (1871). 3 Blyth, Journ. As. Soe. Bengal, vol. xvii. p- 251 (1848). 
* Geoffroy, Ann. du Muséum, vol. xv. p. 197 (1810). 
