76 MR. K, ANDERSEN ON BATS [May 16, 
Tinclude in this group 40 different forms (22 species), correspond- 
ing to Lh. megaphyllus, affinis, capensis, clivosus, and ferrum- 
equinwm in Dobson’s ‘ Catalogue of the Chiroptera in the British 
Museum. Only the Austro-Malayan, Oriental, and Palearctic 
forms will be described below, and only the first species in some 
detail, the description of the other forms being, as a rule, confined 
to the points in which they differ from the fundamental type. 
The Ethiopian species will be briefly mentioned in the ‘“ General 
Remarks” on the group (p. 117). 
1. RHINOLOPHUS SIMPLEX, sp. n. (Plate III. fig. 1.) 
Diagnosis. Cranial character : supraorbital crests meeting at a 
point behind the middle of the orbit. External: sella distinctly 
constricted at middle. Forearm 44:2 mm. 
Details. Nose-leaves large, as compared with those of the other 
Austro-Malayan species (2h. truncatus, nanus). A supplementary 
leaflet distinctly visible in front of, and on the anterior part of the 
sides of, the horseshoe ; a character common to all the members of 
the present group, but becoming gradually less pronounced in the 
more highly developed species (affinis, ferrwm-equinum, and their 
allies) ; it seems to point back to the much more primitive genus 
ilipposiderus. Horseshoe so broad as to completely cover the 
upper lip; a slight indication of a tooth-like projection on either 
side of the median notch. Sella decidedly broader at base than at 
summit, and distinctly constricted at middle; summit rounded ; 
height of sella, from angle between vertical portion and nasal lobe, 
about 4°8 mm., width at base 2°3, at constriction 1:9, at summit 
18 mm.; front of sella densely covered with exceedingly short 
white hairs (scarcely observable without a lens). Posterior con- 
necting process low and broadly rounded off. Lancet long, almost 
cuneate ; length, from posterior transverse bridge, about 4°7 mm. 
Three mental grooves, as in all forms of this group, except the 
highest-differentiated species (ferrwm-equinum and its nearest 
relations). 
Hars, compared with those of the closely allied Austro-Malayan 
species, rather large, almost reaching the tip of the muzzle when 
laid forwards. Upper part of outer margin somewhat concave ; 
tip blunt ; no constriction below the tip. 
Wing-structure very primitive: 4th and 5th metacarpals sub- 
equal in length (the 5th, if anything, a little shorter), and both of 
them but very slightly longer than 3rd; III.°* less than 14 the 
length of ITI.1; IV.° and, especially, V.° very short, being only a 
trifle longer than IV.‘ and V.’ This structure of the wing is 
characteristic of all the primitive members of this group (simples, 
megaphyllus, truncatus, nanus, celebensis, borneensis, malayanus, 
rouai, &e.); it is first in so highly-developed forms as affinis and 
its various modifications (ferrwm-equinum, &e.) that we find an 
important progress: prolongation of III.°; shortening of the 3rd 
* Hor brevity’s sake I call the proximal phalanges of the 3rd, 4th, and 5th fingers 
IIL}, TV.1, and V.!, the distal phalanges of the same fingers IIT.7, [V.2, and V.2 
