Rhinolophus acuminatus Peters.

Andersen, Knud, 1905, On some Bats of the Genus Rhinolophus, with Remarks on their Mutual Affinities, and Descriptions of Twenty-six new Forms., Proceedings of the Zoological Society of London 2, pp. 75-145 : 132-133

23. Rhinolophus acuminatus Peters.

Diagnosis. Connecting process of the lepidus -type. »Sella parallel-margined. Forearm 47—5 mm.

Details. This species, together with Rh. sumatranus and calypso described below, form a small, well-marked section of the lepidus group, which might, conveniently be termed the acu,minatus section, confined to Java, Lombok, Sumatra, and Engano, and differing from all the foregoing species:—(1) in beingvery much larger; Rh. lepidus is in size like a Rh. hipposiderus; Rh. sumatranus like a small Rh. ferrum-equinum ; (2) in being a trifle more advanced in dentition: there seems to be no “vacillation ” in the position of p3.

Sella in Rh. accuminatus practically parallel-margined; on very close examination an extremely faint indication of an expansion below the middle can be traced. Lancet strongly hastate.

The rest of the nose-leaves, the mental grooves, the ears, the wing-structure, the length of the tail, and the insertion of the plagiopatagium (on the ankle, or slightly above or below) as in Rh. lepidus .

RHINOLOPHUS .

Skull. Very much larger than in lepidus . There is no essential difference in the shape *.

Dentition (two skulls). p3 external. p „ and pt quite, or almost, in contact, p2 in row; a minute cusp, pointing inwards.

Measurements. On p. 134.

Geographical races. There are tvzo forms of Rh. acuminatus , differing in size and in geographical habitat.