Specimens examined.—Six (in alcohol), all from the type locality.
Remarks.—I am unable to identify this bat with any described species. Externally it is practically identical with Pipistrellus pipistrellus except that the color, so far as can be judged from specimens preserved in alcohol, is more blackish. Internally it is readily distinguished by the characters of the skull and teeth. From Pipistrellus abramus it differs externally in smaller size, narrower ears, and in the absence of any unusual development of the penis. The incisors differ from those of P. abramus in the same manner as from those of P. pipistrellus.
HIPPOSIDEROS LARVATUS (Horsfield).
Two specimens (one in alcohol) were collected on Sirhassen Island, June 6 and 7, 1900.
RHINOLOPHUS AFFINIS (Horsfield).
One badly damaged specimen from Bunguran appears to be referable to typical Rhinolophus affinis. The forearm cannot be measured, but the third finger is 75 mm. in length. Tibia 21, foot 10.4, ear from meatus 21. Ridge on muzzle beneath edge of nose leaf low, broad and hairy, not in the least suggesting a supplementary leaflet.
RHINOLOPHUS SPADIX sp. nov.
1894. Rhinolophus affinis Thomas and Hartert, Novitates Zoologicæ, II, p. 656. December, 1895 (Sirhassen).
Type.—Adult female (in alcohol) No. 104752 U. S. National Museum. Collected on Sirhassen Island, South Natunas, June, 1900.
Characters.—In general like Rhinolophus affinis but much smaller. Color uniform tawny brown. Muzzle with distinct supplemental leaflets.