1905. | OF THE GENUS RHINOLOPHUS. 83 
parallel-margined. It would evidently have been much more to 
the point if Dobson had called these Bats Rh. borneensis, not 
Rh, megaphyllus. But Rh. borneensis, again, was confused with 
Rh. minor, which, however, not only IS a distinct Species, but 
belongs to a different group of the genus. 
5, RHINOLOPHUS CELEBENSIS, sp. n. (Plate IIT. fig. 4 a, 0.) 
Rhinolophus megaphyllus (non Gray), var. 3 (partim), Dobson, 
fat. Chir, Brit. Mus. (1878) p. 111 (Menado), 
Diagnosis. Supraorbital crests meeting at a point more or less 
in front of the middle of the orbit. Nasal swellings narrow. 
Nose-leaves as in Rh. nanus and Rh. borneensis. Small: forearm 
43-44‘7 mm. 
Details. In the foregoing species (2th. simplex, megaphyllus, 
truncatus, nanus), all of! which are Australian or Austro- Malayan, 
the supraorbital crests join the sagittal crest at a point more or 
less behind the middle of the orbit. In 2h. celebensis, as in all 
the other species of the present group, which are all Oriental, 
‘Paleearctic, or Ethiopian, the supraorbital crests meet at a point 
more or less in front of the middle of the orbit. This makes 
2 comparatively shorter postnasal depression, the supraorbital 
crests being the lateral borders of this depression. In this point 
therefore Hh. celebensis agrees with the MWesterm forms of the 
group, differing from the Eastern. 
The mechanical reason for this modification is evidently the 
following: a slight increase in the size of the temporal muscle 
has pushed the sagittal crest more forwards; this involves a 
shortening of the supraorbital crests; this again a reduction in 
the length of the postnasal depression. 
The nasal swellings are narrow (4:8 mm.), as in the closely 
related Eastern forms (anus, truncatus), In the more Western 
Rh. borneensis they are, at least sownewlba, and as a rule con- 
siderably, broader. Compare figs. 4 and 5 on PI. IIT. 
Tt is worth noticing that the cranial characters of this species 
are, so to say, “fin accordance with” its geographical habitat : 
Celebes is, geographically, intermediate between the Austro- 
Malayan and Indo-Malayan subregions, and in its more im- 
portant cranial characters 2h. celebensis points partly westwards 
(shortening of supraorbital crests), partly eastwards (narrow nasal 
swellings). 
The nose-leaves, ears, wings, and the general size are as in 
Lh, nanus and Kh. borneensis, 
Colour. (1) Makassar specimen (2 ad.; in alcohol; unfaded ; 
teeth unworn).—General impression of upper side : brown : the 
true colour is a deep brown shade of “drab”; base of hairs a 
little lighter than drab ; under side drab with a tinge of “ broccoli- 
brown.” 
(2) Menado specimens (two skins; ad.; teeth almost un- 
worn).—Above uniform dull “ mars-brown,” base of hairs but 
6* 
