1905.] OF THE GENUS RHINOLOPliUS. 133 



Sludl. Yery much larger than in lejndus. There is no essential 

 difference in the shape *. 



Dentition (two skulls), pg external. p._, and p^ quite, or 

 almost, in contact, p'^ in row ; a minute cusp, pointing- 

 inwards. 



Measicrements. On p. 134. 



Geogrcq^hiccd races. There are two forms of Rh. acuminatus, 

 differing in size and in geographical habitat. 



23 a. Rhinolophus acuminatus Peters, typicus. 



Bliinolophus acuminates Peters, MB. Akad. Berlin, 1871, 

 p. 308 ; Dobson, Cat. Chir. Brit. Mus. (1878) p. 113. 



Rliinolophus peter si (partim, nee Dobson 1872 et 1880) Dobson, 

 op. cit. (1878) p. 114. 



Diagnosis. Larger : forearm 50 '5-51 mm. 



Colour. — (1) Dark phase : c? ad., skin ; teeth unworn. As 

 Rh. refulgens. 



(2) Russet phase: 5 ad., in alcohol, unfaded ; teeth unwoi-n. 

 " Cinnamon-rufous " above ; base of hairs of the same colour ; 

 under side hghter. 



Distribution. Java. 



23 &. Rhinolophus acuminatus audax, subsp. n. 



Diagnosis. Smaller : forearm 47-49'5 mm. 



Colour. Two adult females, in alcohol, unfaded ; teeth unworn, 

 or worn. As Rh. refulgens. 



Type. $ ad. (in alcohol). Lombok. Collected by A. Everett, 

 Esq. Brit. Mus. no. 97.4.18.16. 



Remarks. This form ought perhaps to be separated specifically 

 from Rh. acuminatus. The mandible is markedly shorter, the 

 teeth a trifle smaller, the nasal swellings slightly narrower, the 

 geographical habitat quite isolated from that of Rh. 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. S. 

 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. S ad., in alcohol, vinfaded ; teeth unworn. Upper 



* The skull of the species of the acuminatus section is much like that of Sh. rouxi . 

 It can, however, always be discriminated by the broader nasal swellings. The 

 mandible is, proportionately, longer. 



