1905. ] OF THE GENUS RHINOLOPHUS. 121 
Il. Tat RA#NOLOPAUS LEPIDUS GROUP. 
Diagnosis. Basioccipital, between cochleex, not unusually 
narrowed, Posterior connecting process projecting and pointed. 
I include in this group :—(1) All the forms with projecting 
connecting process comprised by Dobson under the technical name 
“Kh. minor” ; their close relationship is unquestionable; their 
differences will be pointed out below ; (2) Rh. acuminatus and its 
allies, which are scarcely more than giant forms of the lepidus- 
type; (3) the Rh. blasti and (4) Rh. ewryale sections, peculiarly 
modified Ethiopian and W. Palearctic representatives of the 
subbadius-type. ‘The two former sections only will be reviewed 
below ; the two latter will be briefly mentioned in the “ General 
Remarks” on the group (p. 135). 
Text-fig. 22. 
c d 
Side views of nose-leaves, showing the principal forms of the connecting process 
in the Rh. simplex group (a) and the Rh. lepidus group (8, ¢, d). 
a. Rh. borneensis typicus; b. Rh. cornutus pumilus ; 
c. Rh. monoceros ; d. Rh. empusa. 
As this is a first attempt to disentangle the many different 
forms hitherto confounded with MHorsfield’s Rh. minor, the 
following preliminary remarks are necessary, as a general 
guidance :— 
The first of the above-named sections (the “‘ lepidus-section ”), 
viz., all the small Oriental and EK. Palearctic Rhinolophi which 
have the connecting process projecting and pointed, fall into three 
show, at a glance, the probable interrelations of the species. As sufficiently emphasised 
in the foregoing pages, I am far from being of opinion that ferrwm-equinum is derived 
from the now-existing affinis (or capensis from rouxi, or stheno from borneensis, &c.). 
But ferrum-equinum has originated from a Bat which had the more essentiui 
characters of affinis (besides several others, unknown to us). The technical names 
in the diagram are, in other words, to be taken, not in their strict specific sense, but 
as names of the sections (“ types,” “ branches”) of which the species, as we now see 
them, are the surviving representatives. 
