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Show 1905.] OF THE GENUS RHINOLOPHUS. 133 aSkull. Very much larger than in lepidus. There is no essential difference in the shape *. Dentition (two skulls). p3 external. p2 and pt quite, or almost, in contact, p2 in row ; a minute cusp, pointing inwards. Measurements. On p. 134. Geographical races. There are two forms of Rh. acuminatus, differing in size and in geographical habitat. 23 a. R h in o l o p h u s a c u m in a t u s Peters, t y p ic u s . Rhinolophus acuminatus Peters, MB. Akad. Berlin, 1871, p. 308 ; Dobson, Cat. Chir. Brit. Mus. (1878) p. 113. Rhinolophus petersi (partim, nec Dobson 1872 et 1880) Dobson, op. cit. (1878) p. 114. Diagnosis. Larger: forearm 50'5-51 mm. Colour.-(1) Dark phase : 8 ad., skin ; teeth unworn. As Rh. refulgens. (2) Russet phase : 2 a(h, hi alcohol, unfaded; teeth unworn. " Cinnamon-rufous " above; base of hairs of the same colour ; under side lighter. Distribution. Java. 23 b. R h in o l o p h u s a c u m in a t u s a u d a x , subsp. n. Diagnosis. Smaller : forearm 47-49'5 mm. Colour. Two adult females, in alcohol, unfaded; teeth unworn, or worn. As Rh. refulgens. Type. 5 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. R h in o l o p h u s s u m a t r a n u s , 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. 8 ad., in alcohol, unfaded; teeth unworn. Upper * The skull of the species of the acuminatus section is much like that of Rh. rouxi. It can, however, always be discriminated by the broader nasal swellings. The mandible is, proportionately, longer. |