1905.] OF THE GENUS RHINOLOPHUS. 133 
Skull. Very much larger than in lepidus. There is no essential 
difference in the shape *. 
Dentition (two skulls). p, external. p, and p, quite, or 
almost, in contact. p* in row; a minute cusp, pointing 
inwards. 
Measurements. On p. 134. 
Geographical races. There ave two forms of Rh. acwminatus, 
differing in size and in geographical habitat. 
23 a. RHTNOLOPHUS ACUMINATUS Peters, TYPICUS. 
Rhinolophus acuminatus Peters, MB. Akad. Berlin, 1871, 
p- 308; Dobson, Cat. Chir. Brit. Mus. (1878) p. 113. 
Rhinolophus peterst (partim, nec Dobson 1872 et 1880) Dobson, 
op. cit. (1878) p. 114. 
Diagnosis. Larger: forearm 50°5-51 mm. 
Colour.—(1) Dark phase: ¢ ad., skin; teeth unworn. As 
Rh. refulgens. 
(2) Russet phase: 9 ad., in alcohol, unfaded; teeth unworn. 
‘¢Cinnamon-rufous”” above; base of hairs of the same colour ; 
under side lighter. 
Distribution. Java. 
23 6. RHINOLOPHUS ACUMINATUS AUDAX, subsp. n. 
Diagnosis. Smaller: forearm 47—49°5 mm. 
Colow. Two adult females, in alcohol, unfaded; teeth unworn, 
or worn. As Lh. refulgens. 
Type. Q ad. (in aleohol). Lombok. Collected by A. Everett, 
Esq. Brit. Mus. no. 97.4.18.16. 
Remarks. This form ought perhaps to be separated specifically 
from Lh. acuminatus. The mandible is markedly shorter, the 
teeth a trifle smaller, the nasal swellings slightly narrower, the 
geographical habitat quite isolated from that of RA. acuminatus. 
But the Bali form, still unknown, may perhaps connect them 
together. 
24. RHINOLOPHUS SUMATRANUS, Sp. n. 
Rhinolophus petersi (non Dobson 1872 et 1878) Dobson, P. Z.8. 
1880, p. 462 (specimen examined). 
Diagnosis. Acuminatus section, but sella very distinctly 
expanded below the middle. Width of horse-shoe 8-3 mm, 
Forearm 51—51-2 mm. 
Details. Chief characters :—(1) compared with acuminatus : the 
very different shape of the sella, as described above ; width at base, 
at expansion, and at summit: 2, 2°4, and 1-7 mm.; (2) compared 
with calypso : the much narrower horse-shoe. 
Colour. 3 ad., in alcohol, unfaded; teeth unworn. Upper 
* The skull of the species of the acwminatus section is much like that of RA. rouxt. 
It can, however, always be discriminated by the broader nasal swellings. The 
mandible is, proportionately, longer. 
