122 MR. K. ANDERSEN ON BATS [May 16, 
natural groups (sub-sections): the lepidus-type, the minor-type, 
and the subbadius-type. , 
I propose to characterise these types at once. It will enable 
me to confine the diagnoses of the various species to the points in 
which they differ from the subjoined general characteristic. 
(i) The lepidus-type—Chief characters : skull larger, width of 
braim-case about 7-7-7-8 mm.; connecting process (in side view) 
projecting as a small, erect triangle (not curved forwards as a 
sharply pointed “ horn ”). 
Description, based on Rh. lepidus (Wynaad, Mysore, Indian 
Peninsula).—Supplementary leaflet as in simplex and its allies. 
Horse-shoe not completely covering the upper lip; a small tooth- 
like projection on either side of the median notch; front border 
sometimes, not always, slightly crenulate (individual variation). 
Sella decidedly broader at base than at summit, slightly, but quite 
distinctly, constricted at middle, narrow at summit: there is a 
tendency towards producing an almost subacute summit to the 
sella (compare with this the borneensis-type : sella broadly rounded 
off, or even truncated, at summit); height of sella 3-2 mm.; 
width at base, at constriction, and at summit: 2, 1:8, and 1:2 mm. 
Connecting process projecting as an acute, sometimes only sub- 
acute, triangle beyond the summit of the sella. Lancet strongly 
hastate, about 3 mm. long. Three mental grooves. ; 
Ears much as in the celebensis-borneensis type, but somewhat 
more blunt-tipped. . 
Wing-structure quite primitive, 7. e. no lengthening of III.’, 
this phalanx being always less, and very often much less, than 14 
the length of III.'; no shortening of the third metacarpal ; fourth 
metacarpal slightly the longest (individually it may fall short of 
the fifth by a fraction of a millimetre). This wing-structure is 
perfectly like that of Rh. simplex and its allies. 
Tail slightly longer than (individually equal to, or a trifle 
shorter than) the lower leg. Plagiopatagium inserted on the 
ankle, slightly above or below. 
Skull. General shape: the simplea-borneensis type, but consider- 
ably smaller, with smaller teeth, and shorter tooth-rows. The 
orbital cavities (the confluent orbital and temporal fosse) are 
shorter and narrower than in borneensis, the zygomatic arches, 
therefore, less projecting laterally, making the zygomatic width of 
the skull, as a rule, only equal to, or even a trifle smaller than, 
the mastoid width. These peculiarities combined make, as a rule, 
the skulls of the species of the lepidws-type rather easily distin- 
guishable from those of the borneensis-type-—Arrangement of the 
nasal swellings, essentially, as in borneensis. Palatal bridge, 
on an average, somewhat less than 4, but more than + the length 
of the maxillar tooth-row. 
Denxtition. Position of p, (in, or external to, the tooth-row) 
“ vacillating.” _p? invariably in the tooth-row. ‘This dentition is 
precisely as in simplex-borneensis. 
Species. Rh. lepidus, monticola, refulgens. 
