140 G. E. Dobson — Osteology of Tricenops persicus. [No. 2, 
The ribs are very much flattened and separated by very narrow inter- 
vals. 
The ento-condyloid tuberosity of the humerus develops an exceedingly 
long styloid process, directed slightly upwards, contrasting with the similar, 
short, blunt process of Phyllorhina ; the ecto-condyloid tuberosity is obso- 
lete ; the articular surface is marked with a very deep sigmoid notch. 
The ulva is strongly curved backwards. 
The bones of the fingers exhibit nearly the same relative proportions in 
length as in Phyllorhina. The terminal phalanx of the third finger only is 
bifid at the extremity, as in Galops Prithii. From the proximal extremity 
of the same phalanx, close to the joint, on the under surface, and slightly to 
the outside, a process of bone, 0T5 inch long, arises, directed downwards, 
slightly forwards, and outwards. 
The anterior portion of the ilium develops, at right angles to its in- 
ferior surface, a broad quadrilateral process of bone. The antero-inferior 
angle of this process is connected by a narrow bony isthmus with the ileo- 
pectineal spine, thus bridging over the space between, and forming the in- 
ferior boundary of a large oval opening, larger than the obturator foramen 
which is placed posterior to it, and, owing to the oblique position of the iliac 
bones, on a somewhat lower level. The rim of the pelvis thus forms a 
straight line from the pubic symphysis to the antero-inferior angle of the 
quadrilateral process on the anterior extremity of the ilium. 
In Ph. larvata, and other species of Phyllorhina, the iliac bones develop 
very similar processes, but that rising from the antero-inferior surface of the 
ilium is much narrower, more of a triangular than of a quadrilateral shape> 
and directed downwards and slightly backwards ; its antero-inferior angle is 
rounded off, and doe's not develop any spine, as in Tricenops. 
In Phinolophws the eminentia ileo-pectinea develops a long, acutely 
pointed spine, not connected by bone with the antero-inferior surface of the 
ilium. 
The fibula is complete as in other Ehinolophine bats. The toes are 
equal in length, each with two joints, as in Phyllorhina and Galops. 
The genera of Rhinolophida may be arranged, osteologically, under two 
subfamilies as follows : — 
Subfam. I. Ruixolopiiin^. 
Toes unequal ; outer toe with two, remaining toes with three joints each ; 
ileo-pectineal spine not connected by bone with the antero-inferior surface of 
the ilium. 
Genus. 1. Phinolophus. 
Metacarpal bone of fourth finger exceeding that of second finger in 
