EHINOPOMA MICEOPHYLLUM. 
149 
during the winter by Stoliczka, who had collected them in Kach, and had found them 
hibernating. The specimens procured by me in Egypt were met with, in full activity, 
hying about in December and in the beginning of March. When disturbed in the 
daytime they flew out in great numbers into the bright sunshine, but after flying about 
for a little they generally found their way back again to their haunts, whilst a few 
remained outside seemingly dazed by the light. In view of the considerable temperature 
which distinguishes the caverns in Egypt and the recesses of the monuments, an 
interesting research would be to And out what species of the Chiroptera really hibernate 
under these conditions. Whenever I have penetrated into deep recesses tenanted 
by bats between the foregoing periods and lit a candle, or it may be a flambeau, 
in a large chamber or cavern, I have invariably found the bats therein to be in 
full activity. 
[There is an entire absence of fat in the specimens collected by Capt. Flower in 
May, while the deposit is greatly developed in those collected by Mr. Rothschild 
in October, This store of fat is no doubt drawn upon during the season of least 
activity when food is scarce. The absence of the tail is of not infrequent occurrence in 
this bat.— W. E. de W.] 
Cantor ^ in 1846, pointed out that in this bat there is a small csecum, which he said 
was a “ true caecum, the existence of which in all Chiroptera has erroneously been denied 
or [said to be] restricted to the cardiac csecum observed in the genera Vampyrus and 
Pteroptus!’ 
Dobson 2, however, states that the Chiroptera have no csecum, but he admitted the 
existence of a csecal appendage about the beginning of the rectum in Megaderma. He 
could not detect the existence of such an organ in the specimens of Rhinopoma he 
examined, but in those individuals I have examined I have found it well-marked and 
developed about 12 mm. above the anus. The presence of this structure in these two 
genera is a further illustration of their close relationship, which is also evinced in the 
character of their nose-leaf. The finely notched end of the tragus of Rhinopoma seems 
to be only an extreme modification of the bifid tragus of Megaderma. 
In Rhinopoma, as in some of the genera of the Rhinolophidse and in Megaderma, the 
females are provided with prepubic teats. I am indebted to the courtesy of Professor 
C. Stewart for a section through one of these teats, which clearly demonstrates that it 
is perforated by a main duct opening externally by a single orifice, and that into this 
main channel a number of secondary ducts open, all lined with epithelium. Unfortu¬ 
nately I have not been able to obtain any clear indication of the glandular substance 
itself, which doubtless does exist, but would require fresh specimens for its demon- 
^ Journ. As. Soe. Beng. xv. 1846, p. 178. 
2 Cat. Chirop. B. M. 1878, p. xxiv. 
