90 MR. K. ANDERSEN ON BATS | May 16, 
It looks like a dark and a light “ phase.” The dark phase 
differs from that of Ah. borneensis, chiefly, in having the under 
side of the body much lighter, in strong contrast to the colour of 
the upper side, and in having also the base of the hairs of the 
upper side much lighter. The light phase is, as will be seen from 
this description, totally different from the ‘“ cadmium orange ” 
phase of borneensis (and more approaching the light phase of. 
Lh. affinis himalayanus). 
Skull, Wssential characters as in Rh. borneensis, but the median 
anterior nasal swellings somewhat more distinctly marked off 
from the lateral anterior swellings. 
Dentition. p, external; p, and p, almost in contact; p* im row, 
cusp extremely small. 
Measurements. On p. 92. 
Distribution. Biserat (Jalor, Malay Peninsula). Laos Mts. 
(Siam). 
Technical name. The type is in the British Museum. 
Remarks. From the Laos Mountains, Siam, I have seen one 
dried skin only (Tomes Collection); it looks like a light-coloured 
phase of Rh. malayanus; the nasal swellings of the (fragmentary) 
skull have the shape characteristic of this species. But fresh 
material from that region is desirable. 
9, RHINOLOPHUS NEREIS, sp. n. (Plate IIT. fig. 7 a, b, ¢.) 
“ Rhinolophus rouxii?” (non Temm.) Gerrit 5. Miller, Jr., 
Proc. Wash. Ac. Sci. ii. (Aug. 20th, 1900) p. 234. 
Diagnosis. Allied to Rh. borneensis, and of about the same size, 
but with much larger skull and teeth. Lower leg considerably 
longer: 21 mm. Tail comparatively very short: 17 mm. Fore-. 
arm about 45 mm. 
Details. In addition to the above :——The second phalanx of the 
third finger is more than 14 the length of IIT.’; this is the first 
time we have to note a decisive lengthening of III. in Lh, bor- 
neensis, as in all the foregoing species, III.” (always, i in this paper, 
measured without the terminal cartilaginous rod) is invariably 
less than 14 the length of III.’; compare with this Rh. stheno, 
thomas, affinis, ferrum- equinum. IV.! is comparatively shorter 
than in Rh. borneensis, only about 7 the length of the meta- 
carpal of the same finger ; compare with this 2h. stheno. 
Colour. 2 ad. (type); September; teeth almost quite unworn ; 
first preserved in formalin, now in alcohol; probably unfaded.— 
‘“¢ Mars-brown ” above; base of hairs “ ecru-drab”; of a peculiar 
yellowish ‘‘ drab” beneath (?the yellow due to the influence of 
formalin). 
Skull. Of the same general shape as in Lh. borneensis, but 
much larger, with considerably larger teeth, and therefore longer 
tooth-row ; orbital constriction very narrow. The following 
measurements, in millimetres, will give a more precise idea of the 
differences (the ciphers in brackets are the measurements of 
eleven skulls of 2h. borneensis) :—total length, inion to front 
